On July 17, 1906, MacArthur, Mrs. MacArthur, and Douglas MacArthur sailed from Yokohama and arrived at San Francisco to resume his post at Fort Mason as Commander of the Pacific Division. As the commander of the Pacific Division, he was promoted to lieutenant general in September 1906, but though now the highest-ranking officer, was not elevated to chief of staff then or later. Brigadier General J. Franklin Bell had been made the chief of staff while MacArthur was in Asia on April 14, 1906, with BG Bell not being promoted to major general until 3 January 1907.