He graduated from Starkville High School in 1942 and began studies at Mississippi State University, but left college in order to enlist in the military for World War II.

[2] Walker resumed his college studies after the war, graduating from Mississippi State in 1947 with a Bachelor of Science degree in agricultural economics.

[4] Walker was activated for the Korean War, joining the 31st Infantry Division as a captain and serving as a liaison officer at the Far East Command.

[5] After returning to the United States, Walker continued his National Guard service, carrying out command and staff assignments in the 31st Division.

[12] At his retirement, Walker received from Governor Bill Allain a state promotion to full General (four stars) as recognition of the sustained superior performance he rendered throughout his career.

[13] During World War II, Walker's entire Reserve Officers' Training Corps class at Mississippi State University left school to enlist.