Third and fourth terms of the presidency of Franklin D. Roosevelt
On the morning of December 7, 1941, the Japanese struck the U.S. naval base at Pearl Harbor with a surprise attack, knocking out the main American battleship fleet and killing 2,403 American servicemen and civilians. The great majority of scholars have rejected the conspiracy thesis that Roosevelt, or any other high government officials, knew in advance about the Japanese attack on Pearl Harbor. The Japanese had kept their secrets closely guarded, and while senior American officials were aware that war was imminent, they did not expect an attack on Pearl Harbor. Roosevelt had anticipated that the first attack would take place in the Dutch East Indies, Thailand, or the Philippines.
United States Navy Dental Corps
Two Dental Corps officers were killed and four were wounded in the attack on Pearl Harbor in 1941; they would not be the last dental officers to die in the line of duty. As the US got ready for world conflict, Navy Dentistry's active duty numbers swelled to its highest levels ever – ultimately reaching 7,000 dental officers and 11,000 dental technicians. Active in nearly every engagement during the war, dental personnel who were assigned to operational units in the South Pacific often assisted in emergency medical operations ashore, especially facial trauma requiring surgery. Numerous dental officers were killed in action aboard war ships and in major battles in Guadalcanal, Tarawa, Saipan, and Iwo Jima. For their heroic efforts, 93 dental officers received personal awards, including the Silver Star, the Legion of Merit, the Navy and Marine Corps Medal, and the Bronze Star Medal.