After Pearl Harbor, Marshall was promoted to Brigadier General and remained as Deputy Chief of Staff. He was left in charge of the old Command Post at #1 Victoria in Manila when Gen. MacArthur went to Corregidor to establish his Command Post on December 24, 1941. He remained there until directed to bring the balance of the Staff to Corregidor, January 1, 1942. As the Japanese invasion of the Philippines advanced, the fall of Corregidor appeared imminent. As a result, on the night of March 11, 1942 MacAurthur, his family, and his staff, including Marshall, evacuated under cover of night in four PT boats of Motor Torpedo Boat Squadron Three, with the lead boat commanded by Lieutenant John D. Bulkeley. After an open ocean voyage of several hundred miles they reached Mindanao, then flew to Darwin, Australia, reaching there on March 17, 1942.