They were used by Guard units in CONUS to maintain their training levels and proficiency. In May 1987, at Fort McCoy, 1st Battalion, 632nd Armor Regiment of the Wisconsin Army National Guard retired the last M48 tanks in the US military. The tanks were parked in a holding pen at the WI ARNG Mobilization and Training Equipment Site (MATES) and later transferred to the Moroccan Army. They were replaced in National Guard service by the M60A3. However many other countries continue to use these M48 models.