 The tradition of issuing pistols to officers as a primary weapon is being phased out by many nations.The United States Marine Corps, for example, recently began requiring all enlisted personnel and all officers below the rank of Lieutenant Colonel to carry the M4 Carbine as their primary weapon.British officers on combat duty are also normally issued with the standard rifle, but are not required to carry it with them at all times; for example, while operating as support staff the rifle would be stored in the base armory, though this is the same for most support staff.