BMP-1

The BMP-1 is a Soviet amphibious tracked infantry fighting vehicle. BMP stands for Boyevaya Mashina Pjehoty 1, meaning "infantry fighting vehicle, 1st serial model". The BMP-1 was the first mass-produced infantry fighting vehicle of the Soviet Union. It was called the M-1967, BMP and BMP-76PB by NATO before its correct designation was known.The Soviet military leadership saw any future wars as being conducted with nuclear, chemical and biological weapons and a new design, like the BMP, combining the properties of an armored personnel carrier and a light tank would allow infantry to operate from the relative safety of its armoured, radiation-shielded interior in contaminated areas and to fight…

Source: Wikipedia