Following Hitler's December 1941 declaration of war upon the United States German Admiral Karl Doenitz sought to take advantage of the weakly guarded sea-lanes near the American coast and pick off the highly vulnerable, solitary, merchant ships plying these waters. Hitler approved Doenitz's plan, code named Operation Paukenschlag, or drumbeat/roll the drums. Doenitz' U-boats would carry Hitler's war to America and if successful deliver the first blows designed to cripple American shipping and industry.

In November 1941, a lull in the year long battle between the Axis and British Commonwealth forces fighting across the North African desert finally allowed both sides to recover their strength. German General Erwin Rommel's command fielded 414 tanks, 173 German, and nine divisions (including two German divisions; the 5th Light - renamed the 21st Panzer Division on October and 15th Panzer Division) with 320 aircraft providing direct close air support.