The 1941 report of the 1941 U.S. General Staff Conference established general principles, resources and military intervention strategies for a common Allied military strategy. The British approach to the Nazi problem was sufficient for the original American plan. The British first called for a sun-tsu approach to attack the flanks and peripheries of Nazi interests (North Africa, the Middle East, etc.). On the other hand, the United States sought an approach based on Jomini a hammer, a mass battle with Nazi Germany. The plan assumed that if the United States went to war against Nazi Germany, there would probably also be Fascist Italy and imperial Japan. The general principles of the agreement stipulate that  One of the agreed offensive policies was the early elimination of Italy as a partner in the axis; To help neutral states and clandestine groups resist the Axis powers; an ongoing air offensive to destroy the military power of the axis; the establishment of forces for the possible offensive against Germany and, if necessary, the conquest of the territory from which this offensive can be launched; and the agreement that the Atlantic and European regions are the ”decisive theatre” and are therefore at the centre of US military efforts, although the ”great importance” of the Middle East and Africa has also been noted. Initially, the plan was adopted only on an informal basis, but was ratified at the ”Arcadia” conference in Washington in December 1941. The result was the strengthening of U.S. Navy forces operating in the Atlantic, as well as the sending of the new British battleship Prince of Wales and the former battle cruiser Repulse into far eastern waters. This was consistent with the consensus that the security of the community and the British Empire, including maintaining a Position of the Far East, should be maintained in all circumstances. The third cornerstone of the agreement of the three powers was that the security of maritime communication between allied powers is essential. The U.S.-British Staff conference was a series of secret conversations between the U.S.
and British military on U.S., British and Canadian (ABC) military coordination in the event of U.S. entry into World War II. The conference was held from January 29 to March 27, 1941 in Washington, D.C. and ended with a report entitled ”ABC-1,” which was tacitly approved two days later by President Franklin D. Roosevelt.  The nine-member U.S. delegation included Brigadier General Leonard T. ”Gee” Gerow, Head of the War Plans Department, War Department Staff; The Air Force Pass. Joseph T. McNarney, recently returned from his position as Chief of Staff of the Army Observation Panel in London; Robert L. Ghormley, who was part of a high-level team in London in August 1940 to determine britain`s viability and the assistance America could provide without violating its neutrality; And Rear Adm.
Richmond K. Turner, Director of War Plans for the U.S. Navy. The general principles of the agreement suggested that the territorial interest of the United States was in the Western Hemisphere; That the security of the United Kingdom and its empire and community must be preserved in all circumstances, including maintaining a position in the Far East; and that the security of maritime communication between allied powers was essential. Finally, if Japan goes to war, the military strategy in the Far East will be defensive.  Although the ABC-1 agreement was not a military alliance, it meant that the United States was preparing to go to war on the allied side, that the United States would do everything to maintain the security of the British Commonwealth, and that the U.S. military was modifying existing war plans (for example. B RAINBOW plans) to integrate military integration and cooperation with other nations.