 During the afternoon of 10 June a group of senior officers , including General Douglas MacArthur , his air commander General George Kenney , and Australians Lieutenant General Morshead and Air Vice Marshal William Bostock ( head of RAAF Command ) , made an inspection tour of the Labuan beachhead . MacArthur insisted on seeing Australian soldiers in action , and the party visited a group of front line infantrymen before departing . The process of unloading supplies from the invasion fleet during 10 June proceeded quickly , and the ships began to depart for Morotai during the afternoon of 11 June . 
