The Canadian Army Pacific Force was raised in 1945 as a field force intended to participate in the last phase of The War Against Japan, an anticipated Allied invasion of the Japanese home islands in the last phase of the Second World War. The CAPF was based on an infantry division structure, however, to increase operability with the Americans, certain units bore US organizational structures and names. As well, Canadian units went into training with US weapons to ease logistical concerns.
Major General Bert Hoffmeister was named to command the division, and the three Infantry Regiments (the equivalent of a Canadian brigade) had battalions bearing the name of those infantry battalions that had fought with the 1st Canadian Infantry Division in Europe.
When the atomic bombings brought the war to a swift close in Aug and Sep 1945, the CAPF was disbanded.
The CAPF patch was also used in conjunction with other formation patches. This would have designated a soldier serving with another formation who had volunteered to serve with the Canadian Army Pacific Force.