Which rank has a collar device of one stripe over crossed rifles?

The collar device of one stripe over crossed rifles corresponds to the rank of a Staff Sergeant. This insignia signifies the position within the rank structure of the United States Marine Corps. The crossed rifles represent the Marine Corps' infantry traditions, while the stripe indicates the specific enlistment level of the individual.

In the context of Marine Corps ranks, the insignia structure is designed to provide clear visual differentiation between ranks. A Lance Corporal, on the other hand, is represented by a single stripe only and has not yet reached the proficiency and leadership level indicated by the Staff Sergeant's insignia. Understanding these insignia is crucial for recognizing rank in military settings and maintaining proper respect and protocol.