BMP-1

The BMP-1 is a Soviet amphibious tracked infantry fighting vehicle. BMP stands for Boyevaya Mashina Pekhoty 1 (meaning "Infantry fighting vehicle")
The BMP-1 was the world's first mass-produced infantry fighting vehicle (IFV).
It was a revolutionary design combining the properties of an armored personnel carrier (APC) and a light tank. The Soviet military leadership saw any future wars as being conducted with nuclear, chemical and biological weapons. A vehicle like the BMP would allow infantry to operate from the relative safety of its armored, radiation-shielded interior in contaminated areas and to fight alongside it in uncontaminated areas. It would increase infantry squad mobility, provide fire support to them, and also be able to fight alongside main battle tanks.

with its 73 mm 2A28 Grom low pressure smoothbore short-recoil semi-automatic gun
and ATGM launcher for 9M14 Malyutka

Photo is taken in German's Panzermuseum Munster!