 One of MacArthur 's first orders to Brett was for a bombing mission to the Philippines , an order delivered personally by Sutherland . When Brett protested , Sutherland informed him that MacArthur wanted the mission carried out . The mission was flown by Brigadier General Ralph Royce , but MacArthur personally wrote a reprimand to Brett . Henceforth , communications with Sutherland were handled by Bostock . Further disagreements between MacArthur and Brett followed . Meanwhile , in Washington , General George Marshall and the Chief of Army Air Forces , Lieutenant General Henry Arnold , had become alarmed at Brett 's integration of the USAAF and RAAF , and disturbed by his inability to work with MacArthur . On 6 July 1942 Marshall radioed MacArthur to offer him Major General George Kenney or Brigadier General Jimmy Doolittle as a replacement for Brett ; MacArthur selected Kenney . 
