how many in a company of marines
43...1 Infantry Officer and 42 enlisted infantry Marines of varying ranks. The 13 members per squad is correct (1 Squad leader and 3 fire teams of 4 Marines). However, there is a platoon headquarters section according to MCRP 5-12D, Organization of Marine Corps Forces. It contains the officer, platoon commander, the platoon sergeant (a Staff Sergeant), a radio operator, and a platoon guide. Someone mentioned M249 light machineguns in the platoon which is wrong now.