1886 – Born on June 25th in Gladwyne, Pennsylvania. Air strategist, commanding general of the U.S. Army Air Corps in World War II, who long and successfully advocated a separate air force ranking equally with the Army and the Navy.
1907 – Arnold graduated from the U.S. Military Academy at West Point, New York.
1911 – He received flying instruction from Orville Wright.
1938 – He rose in the ranks of the Air Corps and become the chief .
– He commanded the U.S. Army Air Corps throughout the world and served as air representative on the U.S. Joint Chiefs of Staff and the Allied Combined Chiefs of Staff, greatly influencing strategic air bombardment.
1944 – He was promoted general of the Army (five stars; later general of the Air Force, the first to hold this rank).
1947 – The National Defense Act created the autonomous Air Force for which he had worked.
1950 – Died on January 15th in Sonoma, California.