Naval Construction Battalion Maintenance Unit Logos

As the war progressed and new needs developed specialized types of battalions and detachments became essential. The new specialized units ultimately grew into a sizable force.

A smaller, specialized unit within the Seabee organization was the Construction Battalion Maintenance Unit, which was about one-quarter the size of a regular construction battalion. Its organization took over the maintenance of a base after a regular battalion had completed construction and moved on to its next assignment. The unit maintained facilities, made repairs and improvements, and completed construction work previously initiated.