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).
Uniforms of the United States Navy
As the Marines do not have medical personnel and chaplains, the Navy provides them. The officers and enlisted include doctors, physician assistants, dentists, nurses, hospital corpsmen, chaplains, religious program specialists, and Naval Gunfire Liaison Officers. There are also specialized ratings that will be attached to Marine commands such as Navy Divers for example. Because of this relationship, these personnel are authorized to wear U.S. Marine Corps utility (desert/woodland) uniforms with Navy rank insignia replacing the Marine insignia for enlisted personnel (Navy and Marine officer rank insignia are identical) and with a "U.S. Navy" patch replacing the "U.S. Marines" one. They wear the 8-point utility cover, but it lacks the Marine Corps emblem. Additionally, Navy personnel attached to Marine units can elect to wear Marine service uniforms, with Navy insignia. Those opting to wear Marine Corps service uniforms must meet Marine Corps grooming and physical appearance standards, which are more stringent than Navy standards. This does not apply to the MARPAT uniforms, as this uniform is required for wear in the field when attached to Marine units, regardless of adherence to Marine Corps grooming standards. Navy personnel are not authorized to wear the Marine Corps Dress Blue Uniform; instead Navy Dress Blue and White uniforms are worn.