American and Filipino forces were under siege in the Philippines. The Japanese invaded soon after the Pearl Harbor attack. By early March 1942, they had bottled up the U.S. and Filipinos on the Bataan Peninsula and Corregidor.
President Roosevelt, fearful of one of America’s most successful and well-known generals being taken captive by the Japanese if Corregidor fell was too bitter a conclusion to contemplate. He ordered MacArthur to escape to Australia to take charge of Allied forces there. He left the Philippines on March 11.
However, contrary to public belief, MacArthur’s statement, “I Shall Return” was not given on the shores of the Philippines, but at an Australian train station, 10 days later.
On This Day in 1942, Gen. Douglas MacArthur Gives the “I Shall Return” Speech | SOFREP