Davis became commanding general of the 4th Cavalry Brigade, 2nd Cavalry Division at Fort Riley, Kansas, in January 1941.
About six months later, he was assigned to Washington, D.C. as an assistant in the Office of the Inspector General.
While serving in the Office of the Inspector General, Davis also served on the Advisory Committee on Negro Troop Policies.
From 1941 to 1944, Davis conducted inspection tours of African-American soldiers in the United States Army.
From September to November 1942 and again from July to November 1944, Davis made inspection tours of African-American soldiers stationed in Europe.

On November 10, 1944, Davis was reassigned to work under Lieutenant General John C. H. Lee as special assistant to the commanding general, Communications Zone, European Theater of Operations.
He served with the General Inspectorate Section, European Theater of Operation (later the Office of the Inspector General on Europe) from January through May 1945.
While serving in the European Theater of Operations, Davis was influential in the proposed policy of integration using replacement units.
Davis became commanding general of the 4th Cavalry Brigade, 2nd Cavalry Division at Fort Riley, Kansas, in January 1941. About six months later, he was assigned to Washington, D.C. as an assistant in the Office of the Inspector General. While serving in the Office of the Inspector General, Davis also served on the Advisory Committee on Negro Troop Policies. From 1941 to 1944, Davis conducted inspection tours of African-American soldiers in the United States Army. From September to November 1942 and again from July to November 1944, Davis made inspection tours of African-American soldiers stationed in Europe.
On November 10, 1944, Davis was reassigned to work under Lieutenant General John C. H. Lee as special assistant to the commanding general, Communications Zone, European Theater of Operations. He served with the General Inspectorate Section, European Theater of Operation (later the Office of the Inspector General on Europe) from January through May 1945. While serving in the European Theater of Operations, Davis was influential in the proposed policy of integration using replacement units.
Benjamin O. Davis Sr.