Vancouver Barracks in Vancouver, Washington, from 1936 to 1938, and was promoted to brigadier general in October 1936. In addition to obtaining a long-sought and significant troop command, traditionally viewed as an indispensable step to the pinnacle of the US Army, Marshall was also responsible for 35 Civilian Conservation Corps (CCC) camps in Oregon and southern Washington. As post commander Marshall made a concerted effort to cultivate relations with the city of Portland and to enhance the image of the US Army in the region. With the CCC, he initiated a series of measures to improve the morale of the participants and to make the experience beneficial in their later life. He started a newspaper for the CCC region that provided a vehicle to promote CCC successes, and he initiated a variety of programs that developed participants' skills and improved their health. Marshall's inspections of the CCC camps gave him and his wife Katherine the chance to enjoy the beauty of the American Pacific Northwest and made that assignment what he called "the most instructive service I ever had, and the most interesting." 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 White House conference at which President Franklin D. Roosevelt proposed a plan to expand the United States Army Air Corps by 15,000 aircraft per year in preparation for World War II. With all other attendees voicing support, Marshall was the only one to disagree, pointing out the lack of consideration for logistical support or training. 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, pointing out that the United States Army did not yet have a single division at full operational strength. Despite others' belief then that Marshall had ended his career, his willingness to express disagreement resulted in Roosevelt nominating Marshall to be the Army Chief of Staff. At the time of the appointment, Marshall was only 34th in seniority, outranked by 21 major generals and 11 brigadier generals, but he was fifth under an unwritten rule that the chief of staff should be able to serve a four-year term before reaching the mandatory retirement age of 64. Upon the retirement of General Malin Craig on July 1, 1939, Marshall