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From 1927 to 1931, Nolan was commander of Fifth Corps Area, headquartered at Fort Hayes at Columbus, Ohio, one of and geographically the largest of nine corps areas established in the continental United States for the administration of the regular army and reserves by the National Defense Act of 1920.
During the early 1930s, Mauborgne was Signal Officer for the 9th Corps Area and later Director of the Signal Corps Aircraft Factory, Wright Field, Ohio.
It was last active as the 12th Observation Group assigned to the Eighth Corps Area of the United States Army at Brooks Field, Texas.