The view that Germany was the more dangerous of the Axis powers was a foundation of Allied strategic planning assumptions at the Arcadia Conference, held in Washington, DC, in late December 1941. Thus, an eventual large-scale Anglo-American landing in northwestern Europe was seen as inevitable. By early 1942, Allied operational planning was in progress, assessing three different operations: Bolero, the build-up of Allied forces in Britain, which commenced in early 1942; Sledgehammer, the establishment of a defensive salient on the French Cotentin peninsula with the intent to pin down German forces; and Roundup, in which broad beachheads were to be seized on the French Channel coast, enabling a breakout into German-occupied France. The latter was eventually to become Operation Overlord
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