Fort D. A. Russell, also known as Fort Francis E. Warren, Francis E. Warren Air Force Base and Fort David A. Russell, was a post and base of operations for the United States Army, and later the Air Force, located in Cheyenne, Wyoming. The fort had been established in 1867 to protect workers for the Union Pacific Railroad. It was named in honor of David Allen Russell, a Civil War general killed at the Battle of Opequon. In 1930, the fort's name was changed to Fort Francis E. Warren. In 1949, it became Francis E.