General Staff Act
Miles helped to kill an ambitious general staff bill in 1902. A narrower law in 1903 provided for a small General Staff Corps, limited to forty‐five officers and assigned to the War Department. It also sanctioned the Army War College, a planning entity that Root had created in 1900. The legislation replaced the commanding general with an army chief of staff, who supervised the staff corps and served as principal military adviser to the secretary of war. Congress required that the chief of staff serve for no more than four years and that the staff officers rotate out of Washington and into the field. The chiefs of existing bureaus such as the Quartermaster and Ordnance departments, and especially the Adjutant General's office, remained powerfully allied with Congress and worked to marginalize the general staff until U.S. entry into World War I.
James E. Hewes, Jr. , From Root to McNamara: Army Organization and Administration 1900–1963, 1975.
"General Staff Act." The Oxford Companion to American Military History. . Encyclopedia.com. (September 18, 2018). http://www.encyclopedia.com/history/encyclopedias-almanacs-transcripts-and-maps/general-staff-act
"General Staff Act." The Oxford Companion to American Military History. . Retrieved September 18, 2018 from Encyclopedia.com: http://www.encyclopedia.com/history/encyclopedias-almanacs-transcripts-and-maps/general-staff-act