Shortly thereafter, Eisenhower became chief of the War Plans Division (subsequently Operations Division), the office widely regarded as the brains of the Army, and threw himself into drafting basic strategy for the war against the Axis. In late February 1942, Marshall asked for a memorandum to outline for the President and the Combined Chiefs the general strategy the Allies should pursue. In response, Eisenhower drafted a do ent that was in effect a precis of the next three years of the war. He observed that there were many desirable objectives the alliance might pursue, but warned that the resources did not exist to tackle every problem. Instead, he wrote, it was crucial to concentrate exclusively on those operations that were necessary to defeat the Axis. In his view, such a resolutely disciplined strategic conception offered the only hope of victory.