A proving ground is the US name for a military installation or reservation where weapons or other military technology are experimented or tested, or where military tactics are tested. The usual British term is training area.
While these types of facilities are generally referred to as military or government establishments, there are examples of civilian industry that have their own proving grounds to test their prototypes and new technologies.
In the United States, there are several military facilities that are designated as Proving Grounds.
Aberdeen Proving Ground is a United States Army facility located at Aberdeen, Maryland, and is the Army's oldest active proving ground, established on October 20, 1917, six months after the United States entered World War I. It was created so that design and testing of ordnancemateriel could be carried out in proximity to the nation's industrial and shipping centers at the time.
Drawsko Pomorskie, Poland (340 km²) belongs to Polish Army and Air Force (since 1946), since 1996 also used by NATO. This facility is internationally known as DPTA - Drawsko Pomorskie Training Area. It is also an important site of archeological excavations.