The MGM-29 Sergeant was an American short-range, solid fuel, surface-to-surface missile developed at the Jet Propulsion Laboratory. The missiles were built by Sperry Utah Company. Activated by the US Army in 1962 to replace the MGM-5 Corporal, it was deployed in Europe and South Korea by 1963, carrying the W52 (M65) nuclear warhead or alternatively one of high explosives. A biological warhead, the M210, was standardized but not procured, and there was also a chemical variant, the M212 which had not attained standardization. It was replaced by the MGM-52 Lance and the last US Army battalion was deactivated in 1977. Sergeant Missile Systems were usually assigned to the field army with the mission of "general support to a corps"