The BMP was the first IFV to enter service with the Soviet Army. Developed in 1960s, the BMP-1 made its first public appearance in 1967. The BMP-1 carries the crew of three. And also can carry an infantry squad of eight, four on each side, seated back to back, each provided with a firing port for his weapon and an observation periscope. The one-man turret of the BMP-1 houses a 2A28 73mm smooth-bore gun and a coaxial 7.62mm machine gun.