Drivetanks.com: the most Magical place on Earth if you like Tanks, Guns, Machine Guns, or even Artillery Pieces!
Drivetanks.com is an operation out of Uvalde Texas. Uvalde is about 120 miles west of San Antonio. The Drivetanks.com facility is on the famous Ox Hunting Ranch, an 18,000-acre hunting ranch, with its guest cabins, a huge lodge, and its own 5800-foot runway. If you could see warbirds at this ranch it would literally be heaven on earth!
Drivetanks.com doesn’t have just a Sherman tank, but from our perspective, their Sherman is the coolest tank of the lot!
M4A2E8 Sherman: Just like Fury
The Sherman is the star of the show for us! It is fully functional, with working power traverse and a working main gun. All the machine guns work, and you get to shoot them as part of one of their packages. You also get to drive the tank around and fire it’s main gun if you go with the big package.
The M4A2E8 saw action with the Russians at the end of the war, and its M4A3E8 counterpart saw all kinds of action in Northern Europe and Italy. These tanks had the improved HVSS suspension with a wider track, giving them very good off-road mobility and the improved turret and gun gave the tank the edge over earlier German tanks like the Panzer III and IV while giving it a better chance against the rarer tiger and Panther tanks.
I have to say, Drivetanks.com is an amazing place for letting people drive and operate the armament of this working piece of history. Nothing beats seeing an actual historic vehicle drive or fly by, a static display in a museum where you can’t touch, or in some cases even take photos is just not the same.
So, even by my standards, this place wouldn’t be the most magical place on earth just because it had a working Sherman. This place has several other working tanks, SPG, and APCS, along with towed guns, mortars and a very large variety of firearms to shoot. Let’s list the other tanks:
T-34-85: This Soviet tank was the Late War Shermans Russian counterpart!
Drivetanks.com has a fully functional T-34-85 tank and it was produced just in time to see action on the eastern front. It has a working main gun and there are similar, slightly to the Sherman but slightly cheaper packages for this tank.
That’s the last of the WWII tanks but they have two more modern ones.
Leopard 1A4 MBT: An updated version of Germany’s first Post War Tank!
This tank is bigger and faster than either the T-34 or Sherman, and its gun doesn’t work, and the prices on its packages reflect this. This tank is probably easier, and more fun to drive than either WWII tank, but just not as cool. This tank is still in use by armies around the world.
Chieftain Mk. 6, MBT: Big and British, and their Car Crusher.
Another tank with no working gun, this bad boy is big and tough, and therefore they use it when someone wants to crush something. This tank went into action in the mid-60s and was still going strong into the early 80s when the Challenger replaced it.
They have a few other tracked vehicles you can drive and get to know:
German SD. KFZ. 251 Armored Half-track: The Angular German Halftrack you see in Movies!
If you want to drive something with tracks on a budget, this is a good place to start.
Kettenkrad SDFZ Tracked Motorcycle: Yeah that wonky motorcycle half-track you see towing planes in WWII Pics.
Just look at this pic! Who wouldn’t want to try out this crazy German contraption!
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They also have some other tank-like tracked vehicles that are not tanks.
Abbot FV433: This SPG is made up to look like the US M109 155mm SPG still in service.
This is a self-propelled artillery piece, a British one, and has a propane gun that makes lots of noise but doesn’t shoot a projectile. Another option if you don’t want to go with one of the deluxe packages. The M109 the Abbot was modified to look like started its life in the 60s and saw use in Vietnam, and modern versions are still in use by the US Army.
BMP 1: The first IFV
This APC with attitude was meant to do more than just deliver troops like a regular boring APC like the M113. No, the BMP delivered fewer, in less comfort, but it brought some heavy firepower normal infantry didn’t have.
With this bad boy, you can pack a bunch of friends into the back for a very hot uncomfortable ride while you drive! I wonder if Drivetanks.com has an award if you can make all the passengers puke!
But that’s not all! They have Towed Guns, Mortars, and Machine guns!
Germann 75mm PAK 40 AT Gun: This puppy works too!
This fully functional German AT gun is available to shoot. not cheap, but less than shooting a tank’s gun. This gun accounted for an awful lot of Sherman tanks during the war, but the Sherman, in turn, killed a bunch of them. I’m pretty sure this gun has been on several TV shows, but I’m not 100% sure.
German 25mm PAK 113: Small bang, small bucks, but it’s still a BIG gun!
A little AT gun for a cheaper alternative to the bigger stuff. not much to be said, if your coming to Drivetanks.com your coming for the big boom boom, right?!
U.S. M2A1 105mm light Howitzer: The 105 towed gun of the US Army for most of the WWII
This gun saw lots of action and was a great gun for its size. For a modest price, you can pop a round off from this gun too! If you want to know what it was like to serve in a light artillery battery, or just want to pop a few rounds off for nostalgia, you can do it here, and that’s damn cool! The Hippies in California would freak out if we tried shooting off something this cool here!!
US M1 81mm Mortar: The main WWII US Mortar!
I do not know of another place you can fire off a mortar, and that makes this option awesome all on its own. The 81mm M1 Mortar was used everywhere the US fought during the war and who would pass up the change to log a hunk of history from it?
U.S. M2 60mm Mortar: In US Infantries Mortar during WWII
This is like it’s bigger brother, just with less explosive charge, less range, and less weight. Oh, and it’s cheaper to shoot off.
The British ML 2inch 50mm Mortar: A small Brit Mortar
The cheapest mortar option. Small, but still a mortar!
Now let’s talk about Machine Guns and other firearms. Machine guns are pretty damn cool. Having been around a long time, there are lots of different kinds of Machine guns, and Drivetanks.com has a plethra of them!
The prize of the Machine collection has to be the M134 GE Minigun. I do not recall ever reading why they called this beast a minigun because it’s a monster of a weapon, bigger and heavier than an M2 Machine gun. These guns are technological Marvels, and contrary to Hollywood use, not man portable in any way. These guns have a selectable rate of fire of 3000 or 6000 rounds a minute. Your average GPMG has a 650 RPM rate of fire. These guns use an electric motor to spin the barrels and drive the feed mechanism, in theory making them more reliable at higher RPM they run, the six barrels allowed the barrels a chance to cool, but sustained fire would melt them down. These weapons have seen a lot of combat over the years, usually mounted on a helicopter of some type, but also on other vehicles that can haul the required ammo and have a compatible electrical system.
Next up on the Bad boys of the Machine list they have would be the M2HB Browning .50 caliber Machine gun. This heavy machine gun has been in service with the US Military since 1933 and is covered in more detail in this post. You get to shoot this gun as a part of the Sherman tank packages.
They have a lot of other more mundane machine guns but come on, a machine gun is damn cool no matter the size or type. So let’s list them!
The GE M134
The Browning M2 HB .50 Browning.
The M1919 .30 Caliber Machine gun (WWII light/Medium/heavy mg of US Army)
The M60E4 7.62 Nato Machine gun (updated Vietnam Era MG still in use)
M249 SAW 5.56 NATO light machine gun
M3 Grease Gun .45 ACP SMG (used by US Army from 43 into the 90s)
MG-42 German WWII machine gun 1200 to 1500 rounds per minute of fun!
MG-34 German WWII Machine gun (this one is a semi-auto version)
H&K MP7 (modern 9mm SMG)
MP-40 German WWII 9mm SMG
PPsh-41 Russian WWII SMG
PKM Soviet Medium Machine gun
DT Machine gun (Early war soviet light MG
They also have a selection of Rifles, sniper rifles and assault rifles and a flamethrower.
US M1 Carbine.30 caliber WWII Carbine
US M1 Garand 30 caliber (30-06), rifle (WWII standard infantry rifle)
M4 Carbine (Modern 5.56 Nato, US Infantry weapon)
K98 German WWII bolt action rifle
Mosin Nagant Russian Bolt action rifle
AK-47 Russian assault rifle.
Barrett M82 .50 caliber sniper rifle
US M9 Flamethrower, (Vietnam era, and last flamethrower used by US troops)
Yeah, a flamethrower! How cool is that?!
So tanks, APCs, SPG, Artillery pieces, AT guns, Mortars, and Machine Guns! If you’re not some kind of wimp, this place really is the most wonderful place on earth. I would rather go here, at any cost versus a trip to any Disney park, Cruise, or show. This place offers a chance to touch, use, and shoot history, hard real history. Honestly though, if this place had no historic value at all, it would still be damn good time, and something really you can only get in good old US of A, specifically in the great state of Texas!
This is all run an own by private US Citizens, and some people might think civilians running around owning tanks with working guns and tons of machine guns, and letting anyone willing to pay a chance to use them is a bad idea, well, you’re wrong, and this is exactly the type of thing that makes the United States so great!
There is a process you have to go through to be allowed to own these items, but it’s not all that hard as long as you’re not a criminal and are willing to fork over the cash to the US Government, and your state and county are ok with it. All shooting and vehicle use is only done after people are thoroughly instructed on everything use, (the class time is all part of the fun!), and while the guest is using the tank or Machine gun, an instructor is standing right there making sure everything is safe.
I can think of no place I would rather go for a vacation, if I could dig up the cash, and get the wife’s approval, than Drivetanks.com and the amazing Ox Ranch!
If you are interested in booking a trip to drive their tanks, shoot their machine guns, or hunt big game on the greater ranch, you can contact them with the information below.
The US Firefly: Yeah, I said US Firefly. They Made Some, But None Saw Combat, And They Were Unique And Not Like The British.
Before the Normandy landings, the British had offered the US up to 200 guns a month, if they were interested in the 17-pounder gun. Their rearmament program was well underway and would have enough Firefly tanks ready to go by D-Day. The US was not interested for a variety of reasons. The 76mm M1A1 and M3 90mm gun programs were well underway. Vehicles that used the guns were in the pipeline, even if there wasn’t much demand from the field yet. They did not want to complicate the supply situation with another tank ammo type.
Another reason was the 17-pounder did not impress the US officers who witnessed the test. It had both a large muzzle flash and breach flashback that hinted to them of a poor design. The efforts to convince the Americans of the errors of their ways went dormant along with the program. It wasn’t until the Ardennes offensive, when the US faced some heavier German armor, and in larger numbers than thought possible, that the program came back to life.
Conversions of 75mm armed US Sherman took place starting in March of 45. The US conversions were different in a few ways. The armored box on the rear of the turret was a little bigger to fit US radios, and the M2 machine gun brackets were welded to the end of the radio box. The tanks chosen for the conversions were all M4s and M4A3. It’s possible some large hatch final production Shermans with all the improvements were a part of the 88 that were converted before the program was suspended.
No one has identified what happened to the tanks, and it seems none survived. None were ever issued to US units. It’s one of those little mysteries lost to the archives and time.
The Sherman Variants: So Many Shermans, so Confusing!Updated 02/21
First off, Americans referred to the Sherman as the M4, or M4 Medium, or Medium, the Sherman name was not commonly used until post-WWII. The British came up with the name for the M4 and referred to it with their own designation system that is covered in more detail later. They also named the Lee and Stuart, and at some point, the US Army just stuck with the naming scheme. The full story behind this is still a minor mystery, with US wartime documents confirming the ‘general’ names were at least used on paper by the US Army during the war.
Now let’s cover the factory production versions of the Sherman. Also, keep in mind; it is very hard to define just how a Sherman may be configured without really knowing where and when it was produced. In some rare cases, large hatch hull, 75mm armed Shermans got produced with normal ammo racks, when the norm for large hatch hull tanks was wet ammo racks.
Then you have post-war rebuilds, where the Army swapped 76 turrets onto 75mm M4A3 HVSS hulls during depot level rebuilds. It would not be impossible for a field repair depot to swap a turret, from one knocked out tank, onto the hull of another, making an oddball. You also have to take into account post-war monuments are sometimes Frankenstein tanks, in one case with a T23 turret on a small hatch hull. You can also run into a Frankenstein tank in museums or post-war civilian restorations. In many cases museum tanks are old range relics that need restoration, in some cases, the tank was in decent shape and a cosmetic restoration can easily be done. For the civilian tanker, who wants a running Sherman, also has to get them from a gunnery range, then, the long process of rebuilding the tank can start. I link to a few places that cover restorations, and these guys do amazing work, taking tanks that you could never imagine running or looking like a tank again, and bringing them back to life. We are talking about tanks used as range targets for decades, in some cases, the powertrain in these tanks survived, the powertrain is the transmission, differential, and final drives.
The nice thing about a tank, as far as WWII collectible vehicles go, say compared to an Airplane, like a P-51 or even SNJ, is tanks won’t break down and kill you by falling out of the sky. If you make a big error in a tank, at worst, you’re going to take out a building, flop it on its side, or sink it in deep mud or something, all not really life-threatening. Once you have the tank, running it is going to be a lot cheaper than a vintage aircraft as well. The other nice thing is if you’re handy, you can work on it yourself, without having to get a certified aircraft mechanic to sign off on all your work. You do need a hell of a lot of heavy equipment to really work on a tank though, but you don’t have annuals and hanger rental costs! This may be why the hobby of owning a tank is becoming more popular in the United States!
Click the link above to go to the page dedicated to the M4.
These tanks used the same R975 motor as the M3 and M3A1. The vast majority of the bugs in this automotive system were worked out before the M4 even started production. This really helped give the Sherman its reputation for reliability and ease of repair. The M4 had a welded hull with a cast turret mounting the M3, 75mm gun. Early variants had three hull machine guns, and two, turret-mounted machine guns. The hull guns were all M1919A4.30 caliber machine guns, two fixed, and one mounted in a ball mount for the co-driver’s use. The fixed guns were deleted from production very rapidly. The turret armament remained unchanged for the whole production run: Using the M3 75mm gun with the M1919A4 coaxial machine gun and M2 .50 caliber mounted on the roof. The turret would be the same turret used on all early Shermans and would be interchangeable on all production Shermans. This version was not produced with the later improved T23 turret but did get some large hatch hulls in special variants.
There were two variants of the M4 to be built with the large hatch hull. The first, the M4 (105) was a large hatch hull mated to the 105mm howitzer, on the M52 mount, in the standard 75mm turret. These hulls did not have wet ammo racks or gyro stabilizers, and the 105mm turrets had an extra armored ventilator, the only turrets to have them. The M4 (105) gun tanks had a special mantlet, with four large screws in the face, unique to 105 tanks. Production started in February of 44, and continued well into 45, with late production M4 (105) tanks getting HVSS suspension. These tanks were used as replacements for the M7 Priest in tank units and spent most of their time being used as indirect fire support, like the M7 they replaced. These tanks also had exhaust deflecting vents installed in the back to help reduce dust from being stirred up.
One other variant of the M4 to get the large hatch hull(100 or so small hatch casting were made as well) was the M4 ‘hybrid’, this hull was welded, but used a large casting very similar to the front of the M4A1 on the front of the hull. It was found that most of the welding hours building the welded hull tanks were spent on the glacis plate. They figured out by using one large casting, incorporating the hatches and bow gun would save on welding time and labor costs.
These M4 hybrids were used by the British to make Ic Fireflies. They liked the 75mm turret these tanks came with since many already had a loaders hatch, this saved them time on the conversion since they didn’t have to cut one. Most of the M4 composite tanks were shipped to Europe or the Pacific, making survivors rare.
The M4 along with the M4A1 was the preferred US Army version of the Sherman until the acceptance of the M4A3. This tank was made in five factories from July of 42 to March of 45, 7584 produced. As far as the US Army was concerned, the M4 and M4A1 were interchangeable.
Click the link above for a dedicated page on the M4A1
This was virtually the same tank as the M4, with the same motor and automotive systems and armament. The manual for the tank was even shared between the M4 and M4A1. The key difference was the cast upper hull. This huge upper hull casting was one piece. This was a very hard thing to do with casting technology at the time, and something the Germans could not have reproduced, they lacked the advanced technology, and facilities needed to do so. Everything from hatches to wheels, and turrets, and guns were interchangeable with the M4 and other Sherman models. This version saw production longer than any other hull type. It also saw all the upgrades like the improved large hatch hull with wet ammo racks, the T23 turret with 76mm gun, and the HVSS suspension system. It was 30 of these M4A1 76 HVSS tanks that were the last Shermans ever produced. The M4A1 was also the first to see combat use with the improved M1 gun and T23 turret during operation Cobra. These tanks would also be the basis for the Israeli M51 Sherman. Three factories produced 9527 M4A1s with all turret types from Feb 42 to July of 45.
The US Marines used one battalion of these tanks on the Cape Gloucester campaign, all small hatch M4A1 75 tanks. This was the only use of this type by the U.S. Marines.
Click the link above for a dedicated page to the M4A2
This version of the Sherman used a welded hull nearly identical to the M4, but with a pair of vented armored grates on the rear hull deck. The M4A2 tanks used the GM 6046 twin diesel. This version was produced with all the improvements the other types got, like the large hatch hull with wet ammo racks, the T23 turret with an improved M1 gun, and HVSS suspension. This version would see very limited combat in US hands, most being shipped to Russia with a few early hulls going to the Brits and USMC. This was the preferred version for Soviet lend-lease deliveries since the USSR was using all diesel tanks. It was produced in six factories with 10,968 of all turret types produced from April of 42 to July 45.
A little trivia about this version, the Sherman used in the movie Fury, was actually a late production M4A2 76 HVSS tank. The only way you can tell a late A2 from a late A3 is by the size of the armored grills on the back deck. They did a great job of hiding this area in the movie.
The Marines operated a lot of small hatch M4A2 and a fairly large number of large hatch M4A2 tanks until the supply of 75mm armed versions dried up in late 1944. Then they switched over to large hatch M4A3 75w tanks, but there were some A2 holdouts amongst the six battalions.
This would be the base for what would be the final Sherman in US Army use, seeing action all the way out to the Korean War in US Army hands. This tank had a welded hull just like the M4, A2, and A4, but used a new motor. The Ford GAA V8, this motor took some time for its bugs to be worked out, so unlike say, the Nazi Germans, the US Army didn’t use it until it was ready for serious production. When it was, it became the preferred US Army version of the tank in both the 75mm and 76mm armed tanks. It would see all the improvements, and be the first hull type to take the HVSS suspension system into combat for the US Army. The M4A3E8 or M4A3 tank with the T23 turret and HVSS suspension bolted on would be the final and ultimate US Army Sherman. It would be produced in three factories with all turret types, 12,596 built-in total between June 42 and June of 45.
After WWII when the Army wanted to standardize on one Sherman type, any M4A3 large hatch hull they could find would have a T23 turret and HVSS suspension installed on it. The Army was so thorough in these conversions no M4A3 large hatch 75mm gun tanks are known to have survived with the original turrets installed. Any M4A1 HVSS 76 and M4A2 HVSS 76 tanks in Army inventory would have been robbed of their suspensions and turrets so they could be installed on M4A3 large hatch hulls.
The M4A3E2 Jumbo: Fishers Fat and Special Baby!
FTA was the sole producer of one very special variant of the Sherman, the M4A3E2 Jumbo. This version of the Sherman was the assault Sherman, though not expressly designed for it, was manufactured to be able to lead a column up a road and take a few hits from German AT guns or tanks so they could be spotted without having to sacrifice the tank. It had a lot of extra armor, and could take a lot of hits before being knocked out, but was still not impervious to German AT gunfire. Only 254 of these tanks were produced, and all but four were shipped to Europe for use by the US Army. They were all armed with the M3 75mm gun. There was a surplus of M1A1 76mm guns in Europe due to an aborted program to rearm 75mm Sherman tanks with the guns. Many of the Jumbo’s ended up with these guns, but none were ever factory installed.
The tank was no different in automotive components from the M4A3 tanks, with the sole difference being the slightly lower final drive gear ratio, going from a 2.84:1 ratio in the base Shermans to 3.36:1 on the Jumbos. This reduced the top speed slightly but helped the tank get all the extra armor moving. The Jumbos were well-liked by their crews and in great demand; no more were built, the only batch being produced from May to July of 1944. Had the invasion of Japan been needed, a special Jumbo with a larger turret that included a flamethrower was considered, but we all know how that story ended.
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The M4A3 (75)w and later 105 was issued to the Marines when the M4A2 75mm tanks went out of production. These would all have been large hatch M4A3 75w tanks, and they may have gotten some with HVSS.
Click the link above for a dedicated page on the M4A4.
This tank is the oddball of Sherman tanks. It had a welded hull and used the A-57 multibank motor. A tank motor made from combining five car motors on one crankcase. As complicated as this sounds, it was produced in large numbers and was reliable enough to see combat use, though not in American hands in most cases. In US use they tried to limit it to stateside training duty. The Brits found it more reliable than their native power plants and liked it just fine. The A4 version never got the improved large hatch hull or T23 turret with the M1 gun. Most were shipped to the Brits via lend-lease and many were turned into Vc Fireflies, making it the most common Firefly type. The US Marines operating these tanks in the states as training tanks, 22 of them for two months before they were replaced by M4A2s. This tank had a longer hull, like its Lee cousin to accommodate the big A-57 motor. It was the first Sherman version to go out of production. It was produced in one factory (CDA) from July of 42 to November of 43 with 7499 built.
The A4 has the honor of being the heaviest and largest standard Sherman. The larger hull to accommodate the A57 motor, and the motor itself added weight. The British used these tanks extensively in combat. These tanks show up in British test reports as well, often pitted against tanks like the Cromwell, in reliability or other tests, and usually coming out ahead. Anyone who has ever changed the spark plugs on their car should really be able to appreciate how hard a motor made by tying five six cylinder automobile engines together, on one crank would be. It is easy to identify an A4 from the side, there’s a bulge on the engine deck just behind the turret, and a bulge in the belly in the same place, both to house a huge cooling fan. The bogie assemblies are spaced further apart, this is very obvious compared to the rest of the Sherman models, and also required a longer set of tracks. These longer tracks spread the added weight out, so it had no effect on flotation.
It turns out this version of the Sherman served with more nations than any other version! These include Britain, Canada, South Africa, New Zealand, Czechoslovakia, India, China and the USA, all used this tank in combat at some point. I find it very interesting the most complicated Sherman saw such widespread use, and still earned a reputation for reliability second to none. The majority of the British Shermans on D-Day were this model as well.
For a tank the US Army didn’t want, it had an excellent combat record, with the nations that got stuck with it. The M4A4 is one of the rarest Shermans to find running with its original motor. The A57 would be very troublesome to keep running for a civilian hobbyist, and I have my doubts about how easy it is to get Chrysler inline-six parts in Europe. Few M4A4’s remained in the United States since the ones used in training were refurbished by Chrysler and then shipped off to the UK for conversion to Fireflies.
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All Sherman variants share a lot of details and most spare parts interchange. Only the motors really call for different parts. All early Sherman tanks had 51mm of armor at 56 degrees on the front hull, and 76mm on the front of the turret. The 56-degree hulls are called small hatch hulls because the driver and co-driver had small hatches that forced them to twist sideways to get in and out. They also started out with direct vision ports along with periscopes for crew vision. Even the cast tanks matched these specs and the hatches from a cast tank could be used on a welded tank. These early hulls had some of the ammo racks in the sponsons above the tracks. Not a great place for ammo, but not an uncommon one for it either. As they improved the hull, they added plates over the direct vision ports and eventually removed them from the castings. Large plates were eventually welded over the ammo racks on the sides, and this extra armor was eventually just added to the casting on the cast hulls. It’s safe to say no small hatch tanks were factory produced with a 76mm gun or improved T23 turret.
The major hull change came when they upgraded the drivers and co-drivers hatch making them bigger. They also thickened the front armor to 64mm but reduced the slope to 47 degrees to fit the new driver’s hatches. The M4 (hybrid and 105 only), M4A1, A2, and A3 were produced with these improved large hatch hulls. Many of these improved large hull tanks had the original 75mm gun and turret. Even the M4A3 with HVSS suspension was produced with the 75mm gun and turret. Most of the large hatch production was with the new and improved T23 turret. These larger hatch hulls would still accept the majority of the spares the older hulls used and the lower hull remained largely unchanged and would accept all the suspension types. Any large hatch M4A3 hull was likely converted to an M4A3 76 HVSS post-WWII.
Through the whole production run, minor details were changed. The suspension saw many different versions before the final HVSS type was produced. The track types also changed and there were many variants made of rubber and steel or steel. There were even at least six different types of road wheel! There are so many minor detail changes, the scope is too big to cover in this post, needless to say, the only other tank I know of with so many minor changes over the production run was the Tiger, and in the Tigers case, it’s just sad, with so few produced, it means almost no two tigers were the same. This was not the case for the Shermans and the changes did not slow production down at all and in many cases were just different because a particular part, like an antenna mount, or driver’s hood, could have been sourced from a different sub-contractor, and the parts may look different but would function exactly the same. Tiger parts are not good at interchanging without modification, and a crew of craftsmen to custom fit them. The changes made to the Sherman were either to incorporate better parts or to use a locally made substitute part for one in short supply, so making their own version allowed them to continue production without a slowdown.
To really get a handle on these differences between Sherman models there are two really great sources.
This is the easy, way: Sherman Minutia site a great site that really covers the minor detail changes on the Sherman tank very well. You can spend hours reading it and looking over the pictures. It explains little of the combat history of the Sherman but covers the minor changes on the vehicles themselves very well. You can spend hours on this site learning about minor Sherman details. It is also a primary source for this post.
Another great way is to get a copy of Son of aSherman volume one, The Sherman design and Developmentby Patrick Stansell and Kurt Laughlin. This book is a must-have for the Sherman plastic modeler or true enthusiast. It is filled with the tiny detail changes that took place on the Sherman production lines from start to finish. They cover everything from lifting eyes to ventilators, casting numbers, to the most minor changes to the turrets. Get it now before it goes out of print and the price skyrockets. I liked it so much I bought two!
The turret saw the continual change as well but remained basically the same. The 75mm gun never changed but its mount and sighting system did. The turret lost the pistol port and then gained it back. It gained a rotor shield over time and an extra hatch. All these detail changes are covered on the site above and in the Son of a Sherman book. The important thing to note was the tank saw continual improvement to an already reliable, and easy to produce design. The Sherman was easy to produce for an industrial nation like the USA, but beyond Nazi Germany’s technical capabilities for several reasons, like large casting and the gun stabilization system, or even multiple reliable motors to power the tens of thousands of tanks made.
In the basics section, I’m only going to cover one more thing. The Sherman tank was not as blind as the tanks it faced. The M4 series, from the first production tank to the final Sherman that rolled off any of the production lines, were covered in periscopes or viewports for the crew. The gunner had a wide-angle periscope that had incorporated the site for the main gun, and they very quickly added a telescopic sight to go with it. The commander had a large rotating periscope in his rotating copula. The loader had a rotating periscope and the driver and co-driver had two, one in their hatch, and another mounted in the hull right in front of them once the DV ports were deleted (non-rotating). The later version added a direct vision cupola and a periscope for the loader in his new hatch. All these periscopes could be lowered and the port closed, and if damage easily and quickly replaced from inside the tank. All this gave the Sherman an advantage in spotting things outside the tank; they were still blind, just not as blind as most of the tanks they would face. Finding an AT gun in a bush could be very challenging for any tank, and infantry, if not scared off by the presence of a tank in the first place, can sneak up on one pretty easily. More ways to see out of the tank was the only thing to help with this. That, and well-trained infantry, who stay with the tank.
This was a big advantage when it saw combat and throughout the tank’s career, it was always one of the best if not the best tank of the war. It was reliable, the crew had a good chance of spotting enemies before other tank crews, the gun was stabilized, fast firing, and accurate. It was as good or better than most of the tanks it faced, even the larger German tanks. These tanks were largely failures, with only long debunked Nazi propaganda propping up their war record. The Sherman has the opposite problem.
Sources: Armored Thunderbolt by Zaloga, Sherman by Hunnicutt, Combat Lessons, Son of a Sherman by Stansell and Laughlin, M4 Sherman tank at war by Green, Tanks are a Might Fine Thing by Stout, TM9-752, TM9-754, TM9-759, TM9-731B, TM9-731A