The Great War group of claims originally stretched for 5 kilometres on either side of the Canadian Pacific Railway line, near Kitchener. The principal showing, however, was apparently located near the head of Thompson Creek on the south side of Goat River, at an elevation of about 1370 metres (although one description gives the elevation as 1830 metres). It is clear that the occurrence is part of the Iron Range showings, possibly forming the southernmost extension of the showings. The regional geology, deposit description and local geology is similar to that of the American Flag occurrence (082FSE016) which occurs at the north end of the belt of showings, 15 kilometres to the north.

Massive to disseminated hematite, with local magnetite and pyrite, occurs within Middle Proterozoic Aldridge Formation Purcell Supergroup argillaceous quartzites along the north trending, subvertical Iron Range fault zone, adjacent to the contact of the sedimentary rocks with a Middle Proterozoic Moyie intrusions gabbro sill. In the best showing two samples were taken: one along 4 metres of soft hematite assayed 52 per cent iron (sulphur and phosphorus trace), and the adjoining 12 metres of harder hematite and magnetite disseminated in greenstone (?altered gabbro) assayed 42 per cent iron, 2.63 per cent sulphur, 0.04 per cent phosphorus and was judged to be of high silica content. The width of the mineralization is given at about 1.2 metres in this location (Minister of Mines Annual Report 1919, page 137).