 Fisher attended the United States Military Academy, and graduated in 1964 with a commission as a second lieutenant of Infantry.Fisher completed his initial post-commissioning training in 1964 and 1965, and was assigned to the 508th Infantry Regiment, a unit of the 82nd Airborne Division.He served with the 508th during its participation in Operation Powerpack, the United States action in the Dominican Republic during that country's 1965–1966 civil war.