The M1A2 Abrams is a formidable main battle tank used by the U.S. Army ... on the left side of the turret forward of the loader's hatch. Internally, however, the M1A2 has been radically redesigned ...

What You Need to Know: Choosing the best modern tanks is a contentious issue, but five standouts are often regarded as the top contenders ... boasts an unmanned turret, while the T-90M Proryv ...