 Virtually all PW-9s served with overseas units, in Hawaii with the 5th Composite Group at Luke Field and later the 18th Pursuit Group at Wheeler Field, and in the Philippines with the 4th Composite Group at Clark Field, Luzon.PW-9s equipped the 3rd, 6th, and 19th Pursuit Squadrons between 1925 and 1931.The FB-1, of which the Navy ordered 16 but received only ten between December 1 and 22, 1924, was not modified for naval operations (for instance, no arresting hook), and was assigned to Marine Corps squadrons VF-1M, VF-2M, and VF-3M, being deployed to China in support of the Marine Expeditionary Force.