Notes
The Field Service Cap (sometimes called a "wedge cap") was officially introduced into the Canadian Army in 1939, when the new Battle Dress uniform was introduced. Wedge style caps had been worn by Canadians in the First World War, particularly by aviators, but its use was never widespread.
After 1939, the khaki FS Cap became the standard headdress of the Canadian Army in the field, though as always there were exceptions, notably tank units and parachute units, who wore the beret, and Highland, Scottish and Irish units who had their own distinctive headdress.
The Field Service Cap was issued in wool serge to match the Battle Dress, but tropical and officers versions also existed. The cap had four main components; the crown, the body, the curtain (or flap) and the peak. The curtain was secured in the front by two small buttons, either of General Service pattern, or of regimental/corps pattern, roughly 12mm in diameter.