What does O-2 represent in the Marine Corps?

O-2 in the Marine Corps pertains to the rank of 1st Lieutenant. In the context of military ranking systems, the "O" indicates that it is an officer rank, and the number following it represents the pay grade. O-1 corresponds to a 2nd Lieutenant, while O-2 represents the next level, which is the 1st Lieutenant.

First Lieutenants typically have more responsibilities and authority than Second Lieutenants, often serving as the executive officer of a company or in other leadership roles depending on the unit's size and mission. Understanding the structure of officer ranks is crucial for anyone involved in military operations or training, as it provides insight into command hierarchy and the duties associated with each rank.