The Grey and Simcoe Foresters is a Primary Reserve infantry regiment of the Canadian Forces. Within the Canadian Army, it is part of the 4th Canadian Division's 31 Canadian Brigade Group. Due to the restructuring of the British Army, The Worcestershire and Sherwood Foresters Regiment was amalgamated into The Mercian Regiment, as its 2nd Battalion, leaving The Grey and Simcoe Foresters as the only remaining unit in the Commonwealth of Nations known to be distinctly designated as a regiment of Foresters.

The Worcestershire and Sherwood Foresters Regiment was an infantry regiment of the British Army, part of the Prince of Wales' Division. The regiment served as the county regiment for Derbyshire, Nottinghamshire and Worcestershire.