CAUTION: I am a
dumbbum and this may not be a totally reliable source.
Average facts I suppose:
The Panzer IV was a German medium tank. Panzer is an abbreviation of PanzerKampfWagen. The Panzer IV was the backbone of the German army during WW2 that served in basically every conflict and was the 2nd most produced
German tank during WW2, with the most produced German tank being the Sturmgeschutz III built on
the Panzer III hull. In a meeting about the shortage of Panzer III Hitler brought up that could use the Panzer IV hulls, and thus the Sturmgeschutz IV was born or StuG IV for short.
A short description of the versions:
Panzer IV Ausf. A
Low velocity 75mm gun made for firing HE or High Explosive in layman's terms, made for infantry support. The low velocity gun remains until Ausf. F2 or G.
Thiccest armour plate is 20mm thicc.
Max speed of 31 kmph on road.
Panzer IV Ausf. B
Glacis plate armour increased to 30mm.
Max speed: 42 kmph on road.
Panzer IV Ausf. C
Turret armour increased to 30mm.
Better engine.
Panzer IV Ausf. D
The most important changes was better armour, especially on the gun mantlet.
Panzer IV Ausf. E
Simply better armour and a new
cupola (the thingy hatch ontop).
Panzer Iv Ausf. F1
More armour (naturlich) with wider tracks to lower
ground pressure. With some tweaks to the engine, sprocket wheels (large wheels driving the tracks forwards) and rear idler wheels (the wheel large wheel in the back on this tank).