Definition: Cantonment is a military term used in ancient and medieval times to refer to areas of land, often fortifications or defensive structures, that were strategically placed to keep an army at bay. These can be fortified by walls, towers, and other defensive structures, with the aim of holding off enemy forces or preventing them from entering the main body of the army. Cantonments are often used in conjunction with forts and siege engines, which are large buildings designed to hold back enemy forces during a siege