 During this time he helped in the planning and execution of the campaigns in North Africa, Pantelleria, Sicily and mainland Italy.Returning to Washington D.C. in 1944, he was reassigned to 8th Air Force in Okinawa under Jimmy Doolittle in July 1945.Timberlake assumed command of the 8th Air Force in 1946 before moving to various high level roles in the Army-Navy Munitions Board from late 1946 to 1950.