Culture of the United States Marine Corps
Two styles of swords are worn by Marines. The Marine Corps officers' sword is a Mameluke Sword, similar to the Persian shamshir presented to Lt. Presley O'Bannon after the Battle of Derna during the First Barbary War. After its adoption in 1825 and initial distribution in 1826, Mameluke Swords have been worn by Marine officers ever since, except during the period 1859–1875, when they were required to wear the Army's Model 1850-foot officers' sword. Upon returning to the traditional sword, many officers gave their Army swords to their senior noncommissioned officer, creating the basis for the NCO sword. Generally, Marines are the only branch where enlisted members regularly carry a sword (the Army authorizes platoon and first sergeants to carry a Model 1840 sword during some ceremonies, while the Chief of Naval Operations authorized Chief Petty Officers and above to carry an optional ceremonial cutlass with dress uniforms in 2010).
List of weapons of the United States Marine Corps
The basic infantry weapon of the United States Marine Corps is the M16A4 rifle. Suppressive fire is provided by the M249 SAW, which is being replaced by the M27 Infantry Automatic Rifle, and the M240B machine gun, at the squad and company levels respectively. In addition, indirect fire is provided by the M203 grenade launcher in fireteams, M224a1 60 mm mortar in companies, and M252 81 mm mortar in battalions. The M2 .50 caliber heavy machine gun and MK19 automatic grenade launcher (40 mm) are available for use by dismounted infantry, though they are more commonly vehicle-mounted. Precision fire is provided by the M39 Enhanced Marksman Rifle, which is being replaced by the M110 Semi-Automatic Sniper System and M40A3, A5, A6 sniper rifle bolt-action sniper rifle, as well as the CheyTac M200 Intervention.