In July 1938, Marshall was assigned to the War Plans Division in Washington D.C. and subsequently reassigned as Deputy Chief of Staff. In that capacity, then-Brigadier General Marshall attended a conference at the White House at which President Franklin D. Roosevelt proposed a plan to provide aircraft to England in support of the war effort, lacking forethought with regard to logistical support or training. With all other attendees voicing support of the plan, Marshall was the only person to voice his disagreement. Marshall also spoke in favor of a large ground army although Roosevelt had said a large air force would be a greater deterrent to enemies than a large army. Despite others' belief then that he had ended his career, this action resulted in his being nominated by Roosevelt to be the Army Chief of Staff as his personal choice. Marshall was then only 34th in seniority and outranked by 21 major-generals and 11 brigadier-generals; but he was the fifth-ranking officer under an unwritten rule that the chief of staff should be able to serve a four-year term before reaching 64.