Short answers, pulled from the story.
MacArthur achieved the rank of General of the Army, the highest rank in the U.S. Army. Only five people in American history have held that rank, and MacArthur is also the only person ever to hold the rank of Field Marshal in the Philippine Army.
MacArthur was awarded the Medal of Honor in 1942 for his defense of the Philippines. General George Marshall intended the award to offset enemy propaganda about MacArthur leaving his command. The Army's own adjutant general later determined in 1945 that the authority for the award was questionable under a strict reading of regulations, since MacArthur had not performed conspicuous acts of gallantry as required by law.
MacArthur departed Corregidor on the night of the 12th of March 1942 with his wife Jean, son Arthur, Arthur's amah Loh Chui, and key staff members. They traveled by PT boat through stormy seas patrolled by Japanese warships to Del Monte Airfield on Mindanao, where B-17s flew them to Australia. MacArthur arrived in Melbourne by train on the 21st of March 1942.
At Terowie railway station in Australia on the 20th of March 1942, MacArthur declared: "I came through and I shall return." Washington asked him to change "I" to "We shall return," but MacArthur ignored the request and kept the original wording.
MacArthur served as Superintendent from 1919 to 1922 and introduced major reforms. He restored the four-year course after Congress had shortened it to three years, formalized the Cadet Honor Code by creating the Cadet Honor Committee in 1922, replaced summer camp with modern weapons training by regular Army sergeants at Fort Dix, expanded intramural sports, and sanctioned a cadet newspaper called The Brag. He was the youngest superintendent since Sylvanus Thayer in 1817.
In 1932, MacArthur personally accompanied troops who used tear gas and bayonets to clear a camp of World War I veterans, known as the Bonus Army, from Washington, D.C. He acted against the advice of Major Dwight D. Eisenhower. The operation was widely seen as a public relations disaster. In 1934, journalists Drew Pearson and Robert S. Allen described his actions as unwarranted and brutal; MacArthur sued them for $750,000 but secretly settled out of court by paying Pearson $15,000 after they threatened to call his mistress as a witness.