Today is 7 December. Seventy nine years ago on this date the Empire of Japan attacked the US Navy at Pearl Harbor. This was one of the decisive world changing military actions of the entire war. In the space of a few hours it complete changed American outlook on the war which had been raging for two years already. Pre Pearl harbor Americans were determined not to get sucked into another European war. Not matter what atrocities the Nazi’s or the Japanese performed, we were NOT going to jump into the war no matter what. We had done that 25 years before. We had beaten the Germans but the overall results were not so good. We had loaned the Allies (British and French mostly) huge amounts of money. After the war most everyone welshed on their war debts to us. And a bunch of peaceniks started up the “merchants of death” business. They claimed that the arms makers had set off WWI to improve their arms sales. And we took a horrible number of combat deaths. The British and the French took even more, but we didn’t care much about that. The whole ball of wax and ill feeling was called isolationism. It got to Congress where laws to prevent us from ever going to war again were passed. Isolationism was so strong that even Franklin Roosevelt, probably the strongest US president of the 20th century could not go against it.
In a couple of hours that Sunday isolationism disappeared. The 3000 casualties at Pearl Harbor were shocking. Sinking the entire Pacific battle fleet was shocking. Being attacked on US soil, thousands of miles from anywhere in Asia where the Japanese were active, without a declaration of war was shocking. Sneak attack we called it. Americans were mad and wanted to kick some ass.
We were well equipped to do so. We had a population of 100 million or so in those days, twice as much as the British or the French, nearly as much as the Russians. We commanded a rich continent that yielded all the oil, coal, iron, wheat, beef, copper, timber, every natural resource imaginable, as we would ever need. We had an industrial base used to producing 4 million automobiles a year. No one else could do that in 1941. We shut down domestic automobile production and converted the car factories over to producing war material. Jeeps, army trucks, semi automatic M1 rifles, tanks, B-24 bombers, strange little secret agent hand guns, just about anything imaginable. Although we didn’t have much of an army in 1941, we fixed that rapidly. We were able to throw an army into North Africa six months after Pearl Harbor big enough and strong enough to decisively beat the Germans, under Rommel.
We unleashed a whirlwind against Japan. We sank their carrier fleet at Midway. We put the Marines ashore on Guadalcanal. We threw in airpower and seapower and more infantry to hold Guadalcanal. We launched a submarine fleet that sank the entire Japanese merchant marine by 1945. We developed and dropped atomic bombs on Hiroshima and Nagasaki. Admiral Yamamoto said “I fear we have awakened a sleeping giant and filled him with a terrible resolve.” He had that right.
A more intelligent Japanese government would have gone far out its way to avoid antagonizing the United States. We had absolutely no intention of getting into a war with them. After we embargoed oil and scrap metal to them they could have bought all the oil they needed from the Dutch East Indies.