The M1A1 Abrams was adopted by U.S. forces in August 1984, and while it was originally equipped with a rifled 105mm gun, a later upgrade to a 120mm smoothbore piece significantly improved its offensive capabilities. Also given a precision fire control system and a 1,500hp gas turbine engine, when the M1A1 was fielded in the Gulf War in 1991, it proved more than a match for enemy T-72 tanks. It has remained in service with timely upgrades over the years, and in January 2023 it was announced that the U.S. would send around thirty M1A1s to Ukraine.
