How many Marine divisions are there in total?

The total number of Marine divisions is four. The Marine Corps structure includes multiple divisions, each designed to fulfill various operational roles and responsibilities. Specifically, as of October 2023, there are four active duty Marine divisions. These divisions are the 1st Marine Division, the 2nd Marine Division, the 3rd Marine Division, and the 4th Marine Division, with the latter being a reserve division.

Understanding this structure is fundamental for recognizing how the Marine Corps organizes its forces for various missions, training exercises, and deployments around the globe. Each division comprises regimental, battalion, and company level formations, ready to be deployed as needed in support of military objectives. This knowledge is essential for FMF officers to effectively manage operational planning and coordination within and among the divisions.