Final answer:
The tradition of senior Marine NCOs wearing a sword of the same type as Army infantry officers began in the post-Civil War era of the late 19th century. The exact date of the Marine Corps NCO sword's adoption is not detailed within the provided references, but historical records suggest that the authorization came around 1859.
Step-by-step explanation:
Origin of the Marine NCO Sword
The question concerns the historical period when senior Marine NCOs began to wear a sword of the same type as the Army infantry officers. This tradition started in the late 19th century, specifically post-Civil War era. However, it is important to note that none of the provided reference images directly pertain to the adoption of the Marine NCO sword. The images discussing 6th-century Japanese swords, U.S. Marines in Iwo Jima during World War II, and other military events, while interesting historically, do not offer information about the specific query regarding Marine NCO swords and their adoption from Army infantry officers.
The Marine Corps NCO sword is a symbol of the professionalism and traditions of the Marine NCO corps. It represents the authority and responsibility conferred upon non-commissioned officers by the Marine Corps. Interestingly, the adoption of the NCO sword can be tied to the post-Civil War period. The US military underwent many changes during this time, advancing in both technology and tactics as seen by the descriptions of military innovations and strategies from different wars. While the exact date of the sword’s adoption is not detailed within the provided references, historical records indicate that the Marine Corps authorized NCOs to carry swords in 1859, and by 1875, the Mameluke sword was adopted for Marine officers, with a similar pattern eventually being used by NCOs as well.