9th Naval Construction Brigade, Captain Robert C. Johnson
41st Naval Construction Regiment [Assault Phase], Commander Paul F. Henderson
31st Battalion [assigned to 5th Marine Division], Lt Commander Dominick J. Ermilio
133rd Battalion [assigned to 4th Marine Division], Lt Commander Ray P. Murphy
62nd Battalion [assigned to VAC], Lt Commander Frank B. Campbell
70th Battalion (half-strength: 15 officers, 285 men, barges, pontoons, causeways)
8th Naval Construction Regiment [Second Phase], Commander Rudolph Y. Taggart
8th Battalion, Commander W.T. Powers
90th Battalion, Commander George S. Brockway
95th Battalion, Commander W.L. Johnson
23rd Battalion [stevedores], Lt Commander H.W. Heuer
301st Battalion [harbor specialists], Commander F.G. Elliot
106th Battalion (Section 2), Lt Commander B. Marcus