What are the TIG and TIS requirements for a Corporal to be promoted to Sergeant?

The correct answer is based on the established guidelines for promoting a Corporal to the rank of Sergeant. For a Corporal, the typical requirements are 12 months Time in Grade (TIG) and 24 months Time in Service (TIS).

These requirements ensure that the individual has spent adequate time in the current rank, allowing them to gain experience and develop the necessary leadership skills expected of a Sergeant. Additionally, the TIS requirement guarantees that the Marine has sufficient overall service experience, which is crucial for assuming greater responsibilities and competencies as they take on the role of a non-commissioned officer.

This approach reflects a commitment to maintaining a well-trained and experienced leadership cadre, ensuring that individuals promoted to higher ranks are well-prepared to fulfill their duties effectively. Thus, the combination of these specific time requirements illustrates the standards set forth for promotion within the ranks of the Marine Corps.