United States Marine Corps noncommissioned officer's sword
The Marine Corps noncommissioned officer's sword is a sword worn by noncommissioned officers (NCOs) and staff noncommissioned officers (SNCOs) of the United States Marine Corps. The NCO sword was adopted in 1859 and is patterned after the United States Army's foot officers' sword of 1850. The M1859 NCO sword continues service today as the Marine Corps drill and ceremonial sword. The sword's use is restricted by regulation to ceremonial occasions by an NCO or Staff NCO in command of troops under arms or at weddings and wedding receptions where at least one of those being married is in uniform and has the rank of Corporal or higher.
Platoon
In the United States Marine Corps, rifle platoons nominally (per TO) consist of 43 Marines and are led by a platoon commander, usually a second lieutenant (O-1), assisted by a platoon sergeant, a staff sergeant (E-6). The platoon headquarters also includes a platoon guide, a sergeant (E-5), who serves as the assistant platoon sergeant and a messenger (Pvt or PFC). Rifle platoons consist of three rifle squads of 13 men each, led by a sergeant (E-5). In the attack (especially if part of the assault echelon) or in a deliberate defense, rifle platoons are usually augmented with a two-man mortar forward observer team and are often reinforced with a seven-man machinegun squad and/or a four-man assault weapons squad.