He served as the head football coach at the Livingston State Teachers College (now the University of West Alabama) from 1947 to 1948 and at several high schools in Alabama, most notably at Theodore High School from 1951 to 1968.
From 1946 to 1947, Douglas served as the head football coach at Livingston State.
[1] After his tenure at Livingston, Douglas served as head football coach at Carbon Hill High School for two seasons and compiled a record of twelve wins, seven losses and one tie (12–7–1).
During his 18-year tenure there, Douglas compiled a record of 101 wins, 58 losses and 13 ties (101–58–13).
[2] Today the stadium at Theodore is named in his honor as C. A. Douglas Field.