Authorized on inactive list as 73d Headquarters Squadron (1927-1929)

Neumann was part of the Headquarters Squadron as a Propeller Specialist.

The group's Headquarters Squadron was disbanded on 22 July 1942.

In Manila he commanded the Headquarters Squadron, Far East Air Service Command.

As the Wing staff grew Headquarters Squadron often split to cover the advance and rear echelons.

Headquarters Squadron participated in exercises, joint maneuvers, organized reserve training and other peacetime operations.

The machine gun troops of the Headquarters Squadron were equipped with the .303 Vickers machine gun.

Headquarters Squadron was disbanded in July 1942.

Four of the B-18s were assigned to Headquarters Squadron, and the others to the 28th BS.

Later, a Headquarters Squadron was formed, as was a Regimental Aid Post.