Thanks! Both sources provided above agree with each other. For others who might be interested, here's a summary:
1x COMPANY HQ (Capt., Lt., 2x marines)
3x RIFLE PLATOONS each composed of
1x Platoon HQ Section (LT., Platoon Sgt., RATELO, Navy Corpsman)
3x Rifle Squads each composed
1x squad leader
3x fire teams (team leader, grenadier, rifleman, SAW gunner)
1x WEAPONS PLATON
1x Platoon HQ Section (LT., Platoon Sgt.)
1x MG Section (22 marines organized into 3x MG Squads with 2x M249s per squad)
1x Mortar Section (10 marines organized into 3x Mortar Squads with 1x 60mm Mortar per squad)
1x Assault Section (13 marines organized into 3x Assault Squads with 2x SMAWs per squad)