The 'wedge" cap, also the Field Service Cap, was the sole headdress for most members of the Canadian Army Overseas at the beginning of the war. This was in khaki material and was introduced concurrent with the 1939 pattern Battledress uniform. Some other caps that were authorised at that time included the Service Cap, worn by MPs and the cap, mechanic which was a black, beret-like, affair. Of course Highland Units wore Tam-o-Shanters while Irish regiments wore the Caubeen. From time to time the odd Glengarry could be seen in use. The Black beret was already authorised for Tank Regiments. By 1943 the khaki beret was coming into common use and replaced the FSC.
A wedge cap which continued to be worn was the Coloured Field Service Cap CFSC. These were private purchase items and the colours varied by Unit or Corps. These were introduced in 1937 (in their modern iteration) and were worn up to unification. Today, CFSCs are still authorised for some units and nearly all Rifle Regiments wear them with 1A Dress.
To see a list of WWII CFSCs go to my web-site at
www.servicepub.com/mdfscaps.htm For more info on berets and other headdress go to Mike Dorosh's Canadian Soldiers web-site
http://www.canadiansoldiers.com/ click on Uniforms and then choose the headdress you want