Major-General Thomas Bland Strange, a retired British officer living near Calgary, raised a force of cowboys and other white settlers, added to them two units of North-West Mounted Police (NWMP), and headed north.
In 1784, Umfreville was in Saskatchewan at a fort near Frenchman Butte and, although in the employ of the NWC, advising the HBC to pursue inland forts such as those the Nor’Westers were operating out of Fort Kaministiquia.
He was part of the Alberta Field Force led by Major General Thomas Bland Strange and served at the battle of Battle of Frenchman's Butte.
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