In April 1942, the Department of National Defence (DND) sought a voluntary surrender of the remaining property of the reserve behind these parcels to the east of the provincial park, however they were refused.
In February 1942, DND began investigating land on the shore of Lake Huron northeast of Sarnia adjacent to Ipperwash Provincial Park (est.
A29 CITC served as a "boot camp" or basic training centre for army recruits from southwestern Ontario (Military District #1) and ceased operations in 1945.
Following the end of the Second World War, DND indicated it was willing to return the majority of the expropriated land and would lease back any areas that were still required for training, however this offer was refused.
It was generally thought that Camp Ipperwash would be identified as surplus to DND's requirements, which would enable the expropriated property to be returned to the Chippewas of Kettle and Stony Point.
Several protests occurred over the land issue during the late 1980s and early 1990s as the Canadian Forces began to examine and identify surplus property following the end of the Cold War.
During the early 1990s, rumours began circulating about the impending move of the 1 RCR based in London to CFB Petawawa, thereby drastically reducing usage of the camp now called the Ipperwash Range Training Areas (IRTA).
In May 1993, members of the Stoney point First Nation began an occupation of the property, setting up tents on the firing ranges in a bid to pressure the federal government to revert ownership.