Panzer III & its variants.

With my usual accuracy and knowledge I will deal this time with the tank wich was the backbone of the german armored forces until 1942 as well the variants of specializated vehicles based on it.

Hooray. Are you going to start at ausf. A and go to ausf. N, or just go in any order?

That is the general Idea, with bergepanzers, artillery OP and so.

Schienenpanzer auf Fahrgestell Panzer III

Just had to add this one before it may be ignored…

Cool.

Weren’t most of the medium/light tanks equiped with a tracks to rail conversion kit?

They dont , the Pz III ausf n rail cruiser was a special variant made by saurer of Austria ( Ostmark for the germans) in 1942 for recce and antipartisan duties, I belive 2 or 3 were manufactured in all.

That few? I would have thought a few more than that would have been made…

Development:

On January 11, 1934, following specifications laid down by Heinz Guderian, the Army Weapons Department drew up plans for a medium tank with a maximum weight of 20,000 kg and a top speed of 35 km/h. It was intended as the main tank of the German Panzer divisions, capable of engaging and destroying opposing tank forces.

Following the usual fashion of the moment a cover name was selected for this new design, the Panzer III becomes the “Zugführerwagen”, platoon leader vehicle, despite this name was only a somewhat dubious way to cover the main battle tank purposes to France and England, it stuck during all the Pz III production. Tipical of the german bureocracy following development were asigned special zugführerwagen codes along their Sonderkraftfahrzeug ( special aplications vehicle) number. ( Sd.Kfz 141)

1:1 scale mock-up of the Zug Fw.

Daimler-Benz, Krupp, MAN, and Rheinmetall all produced prototypes. Testing of the prototypes took place in 1936 and 1937, leading to the Daimler-Benz design being chosen for production. The first Panzer III A came off the assembly line in May of 1937, and a total of ten, two of which were unarmed, were produced in 1937.

The ausf A.

Baimler Benz was the winner in the contract for the ZW 1, this manufacter was only responsible for the automotive and hull component, turret fabrication and arming was in the hands of the giant steel works Krupp.

Despite the technical armament office ( and Guderian too) asked for 50 mm main gun the K.w.K of 37mm caliber was placed instead. this fact caused unrest in the Panzer commanders, however Krupp explained that the 50mm gun was not ready for production and the 37mm gun was available in large numbers, this weapon also had the advantage to interchangeability of ammunition with the infantry Pak 36.

The ausf A had a lenght of 5800 mm width 2810mm and a height of 2360mm

It was powered by a V-12 Maybach HL 108 with 250 hp coupled to a 5 gear transmition, top speed was 35km and combat weight some 15,600 kg. It was the only variant using coil spring as shock dampers in the suspension, this variant is easily identificable by its 5 large roadwheels.

Armament and armour.

Looking at the figures of the ausf A armor is obvious that that was a compromise and probably it was never intended go to war with this poor protection.

Maximum thickness was 16 mm in the turret mantlet, 14,5mm plates protected side front and rear hull, deck plates were 10mm and belly plates only 6mm. The armor was vulnerable to almost everithing including the antitanks rifles of the moment ( the german Pzb 38 penetrate the front plate up to 200 m and the polish MZ 35 almost go straight side to side at the same distance) near hits by artillery and grenades.

Inside turret, loader view showing gun breech and 2 MG 34.

Continued machinegun fire could also cause cracks in the armor and/or jamming the turret.
The main gun was the semiautomatic breech 3,7 K.w.K, percussion fired modified variant of the army pak 36. Its aiming device was the TZf 5 of 2,5x and 24 mm.
Muzzle velocity of the pzg 39 ammunition ( armor piercing steel core tracer incendiary) was 745 mps.

The turret movement had no assistance, turning and elevation was done manually. 2 machineguns MG 34 were carried, 2 paired in the right side of turret and other managed by the hull machinegunner. 4500 rounds of ammunition for the MGs and 121 for the 37 mm main gun were carried.

Two more images of the ausf A, this tank belonged to the 5th panzer Regiment of the 3rd Panzer division.

Isn’t there an underwater variant or an experimental one?

I think your talking about the Tauchpanzer III, about a dozen built for Seelowe, used in the ostfront I think.

Isn’t there an underwater variant or an experimental one?

Yes, yes, all that, give me some time man.

Ausf B/C/D

The main characteristics of these variants was the utilization of a multiple leaf springs suspension with 8 roadwheels per side, this modification was introduced probably to increased the track ground contact lenght and recude ground pressure.

There were also small modification in engine deck and transmition, in other aspects like armor and armament the tanks were the same as in ausf A.
The different layout of the leaf spring is one of the few things that could help precise identification of this models.

Aditional images.

ausf B in Poland 1939.

ausf c, note the shock dampers in first and last bogie.

ausf D rear view.

Nice picture of a command variant of the auf D.

Pzkpfw Ausf E

The first large scale production variant of the Pz III, it standarizated the maybach 265 Hp engine along with a new torsion bar suspension with 6 roadwheels in each side. This system was somewhat complicated for a medium/ligh tank but gave a very soft ride even in the worst terrain. That torsion bar became the standar for the following variants.

Other recognizable characteristicas of this variant were the fully covered armored glass equipped commander cuppola and its modified engine cover. The armor was 30 mm thick in all sides with exception of horizontal surfaces.

Main weapon was still the K.w.K of 37mm, using 37x252R compatible ammo with the infantry Pak 35/36. Guderian asked for this variant to have a 50mm weapon but that was not yet available. 3x MG 34 with armored barrel were used against infantry and soft targets. The tank carried 5 crew, 121 rounds of 37mm and 3350 cartrigdes of 7,92 with S.m.K ( Spitze mit stahl Kern) armor piercing bullets. For foot patrol outside the vehicle the panzermen had a submachinegun Mp 40 carried in the turret walls along with 9 magazines each with 32 round of 9mm ammo.

Here is a photo;

panzer3e-cb09.jpg

panzer3e-cb11.jpg

Tank museum at Saumur. thumbs up

Very good, I think that is a F variant wich is almost the same as the E.

As everybody can see here, the torsion bars had a shock absorber in the first roadwheel.

An ausf E advancing in France, 21th may 1940.