Hawkmoon, I have some serious reservations with your hypothesis. First my understanding is that the United States had already broken the Japanese codes themselves. Thus were privy to just as much coded information as the British. Second, the British had their own problems (just a serious) with the Japanese the same time as the Americans.
Just because you know something may happen, doesn't mean that the correct steps are taken (for instance US Army fighter aircraft parked together in the center of airfields).
A little history that I found at the worldwar-2.net website: The United States was already siding with the British against Germany, loaning them military aircraft and ships, by August of 1941, US Navy was patroling N. Atlantic convoy routes. In September, 1941, the U.S. took over convoying British ships as far as Iceland. By October, shots are being fired between American and Germans naval vessels. And in November, the United States Naval ships captures a German blockade runner.
Nov 10, 1941 Churchill tells Japan, that war against the U.S, means war against Britain Nov 24, 1941 U.S army commanders Across the Pacific are warned of possible imminence of war. Nov 27, 1941 U.S. Pacific forces are put on war alert. Dec 1, Malay declares a State of Emergency Dec 2, 1941 HMS Prince of Wales and HMS Repulse arrive in Singapore Dec 7, 1941 Japanese attack: Pearl Harbor, Malaya (british), Shanghai, Thailand, Hong Kong (british), and Singapore (british) Dec 8, 1941, Japanese bomb: Philppines, Guam, Wake Island, Dec 10, the British Battleships are sunk (Prince of Wales and Repulse). |