Kenney deviated from the normal structure of an air force by creating the Advanced Echelon (ADVON) under Whitehead. The new headquarters had the authority to alter the assignments of aircraft in the forward area, where fast-changing weather and enemy action could invalidate orders drawn up in Australia. He created the 1st, 2nd and 3rd Air Task Forces to control air operations in a forward area for a specific mission, another departure from doctrine. While Kenney was enthusiastic about this innovation, Washington did not like it and, over Kenney's objections, converted the three air task forces into the 308th, 309th and 310th Bombardment Wings. In June 1944, Major General St. Clair Streett's Thirteenth Air Force was added to the Allied Air Forces. Kenney created the Far East Air Forces (FEAF) from his Fifth Air Force headquarters, while ADVON became the Fifth Air Force under Whitehead. The RAAF formed the Australian First Tactical Air Force under Air Commodore Harry Cobby in October 1944, and when MacArthur became commander of all Army forces in the Pacific, the Seventh Air Force was added as well. Major General Paul Wurtsmith replaced Streett in March 1945, and Air Commodore Frederick Scherger replaced Cobby in May. Allied Air Forces was abolished on 2 September 1945.