It will be remembered that Exercise “Musk-Ox” began on 15 February 1946, when a mechanized force of forty-seven men in eleven Snowmobiles left Churchill on the west coast of Hudson Bay. This force travelled northwards to the Arctic Ocean, and then westwards over the sea ice to Cambridge Bay and Coppermine; from here the route lay southwards over the mainland to Fort Nelson and along the Alcan Highway to Grande Prairie, where the exercise ended in the first week of May. The route covered by the ground force is shown in the map on p. 341. The track of about 3000 miles is roughly the shape of a horseshoe extending from Churchill to Edmonton, with a considerable part of the curve lying within the Canadian Arctic.