The Army’s proving grounds are a place where new and experimental weapons can be tested before they’re deployed to the battlefield. But how do you unlock weapons in these facilities? The Army’s proving grounds are a place where new and experimental weapons can be tested before they’re deployed to the battlefield. But how do you unlock weapons in these facilities? To get your hands on some of the latest weaponry, you first need to prove yourself as a soldier. This means completing grueling training exercises that test your physical and mental abilities. After passing these tests, you’ll be given access to the Army’s proving grounds, which are home to some of the world’s most advanced weaponry. To access these facilities, you’ll need a military ID card and a security clearance. Once you’ve been granted access, it’s important to keep your head down and stay out of trouble. The Army doesn’t want its newest weapons falling into the wrong hands. ..