 In 1964, the 40th began Operation Cross Switch rotations to Europe.During these rotations, the entire squadron deployed for two to four months each year from Ohio to Europe to augment the theater airlift forces.At first, the rotational base was located at Évreux-Fauville, France, but after the French left NATO in 1966, the rotation was split between RAF Mildenhall, England, and Rhein-Main Air Base, Germany.