a large metal object sitting in the middle of a field

This Soviet-built ZPU-2 14.5mm anti-aircraft gun was captured by Allied forces during Operation Desert Storm. It is composed of two KPV 14.5mm heavy machine guns mounted on a two-wheeled carriage for mobility. Each gun is capable of firing 600 rounds per minute. Note the battle damage bullet holes on the lower part of the gun mount. Now Preserved in Visakha Museum by Indian Navy.