Europe First - United States

United States

When Germany declared war on the United States on December 11, 1941, the United States faced a decision about how to allocate resources between these two separate theaters of war. On the one hand, Japan had attacked the United States directly at Pearl Harbor, and the Japanese Navy threatened United States territory in a way that Germany, with a limited surface fleet, was not in a position to do. On the other hand, Germany was universally considered the stronger and more dangerous threat to Europe because only Great Britain and the Soviet Union remained un-occupied by Nazi Germany, Germany's geographical proximity to the UK and the Soviet Union was therefore a greater threat to their survival

Prior to the attack on Pearl Harbor, American planners foresaw the possibility of a two-front war. Chief of Naval Operations Harold Rainsford Stark authored the Plan Dog memo, which advocated concentrating on victory in Europe while staying on the defensive in the Pacific. However, the U.S. reassurance to the UK notwithstanding the U.S.'s immediate concern was with Japan. As Army Chief of Staff General George Marshall later said, "we had a fair understanding of what we had best do rather than the necessity of engaging in prolonged conversations. . . .This understanding, which included a recognition that Germany was the main enemy and that the major effort would be made initially in Europe, was obviously not applicable in the present situation. Of first importance now was the necessity to check the Japanese." Thus, the U.S. adherence to the Europe First was, in the early part of the war, more of reassurance to the British ally than it was a policy put into practice.