First used in combat during the Punitive Expedition into Mexico and then extensively during both World War I (1914-1918) and World War II (1939-1945), the Colt Government Model (1911) pistol remained the standard issue handgun in the US armed forces for nearly 80 years and has continued in service with some units to this day. In fact, the M1911 has seen a resurgence among US Special Operations units, as US Marine MARSOC and MEUSOC personnel are issued current generation 1911-type pistols.