Panzer III

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The Panzerkampfwagen III (Panzer III) was a German medium tank built in the 1930s and used throughout World War II. Officially known as Sd.Kfz. 141, it was designed to fight other tanks and to operate with the Panzer IV in German divisions.

Key features
- It had a distinctive three-man turret to keep the commander focused on the fight.
- Early models carried a 37 mm gun, then many were upgraded to a 50 mm gun as enemies got tougher.
- Armor started light and was increased over time, from about 15 mm to 30 mm and later more in the front on some variants.
- A range of engines and suspensions were used as models evolved.

Production and service
- About 5,774 Panzer IIIs were built (not counting the StuG III assault gun based on its chassis). Production ran from 1939 to 1943.
- The Panzer III was Germany’s main medium tank early in the war, but it became outmatched by the Soviet T-34 and KV tanks on the Eastern Front, which led to upgrading and changing its role.
- The chassis also powered the successful Sturmgeschütz III (StuG III) assault gun, one of the war’s most-produced German armored fighting vehicle designs.

Variants and upgrades
- Early Ausf. A–D had lighter 37 mm guns; later Ausf. F–J used a longer 50 mm gun to improve performance.
- Ausf. N introduced a short, powerful 75 mm gun for infantry support and limited anti-armor work.
- Some models added extra armor and schürzen (side armor skirts) to improve protection.

Operational history
- The Panzer III saw action in Poland, France, North Africa with the Afrika Korps, and on the Eastern Front. It remained in service in various roles into 1945.
- By the mid-war period, as newer tanks arrived, the Panzer III was often used for secondary combat roles, training, or as a basis for other vehicles, while the Panzer IV took on the main fighting role.

Legacy
- The Panzer III was the most-produced German armored fighting vehicle design of World War II when counting all variants.
- Its chassis produced important successors, especially the Sturmgeschütz III, making the Panzer III a key part of German armored development even after frontline use waned. Foreign forces also used and modified Panzer IIIs, including deliveries to Turkey, Romania, Croatia, Slovakia, and Norway.