Wars have changed. A century ago, victory often depended on the strength of soldiers on the battlefield. In the 21st century, however, another factor has become equally decisive: the ability to defend ...

This article surveys 30 weapons that transformed warfare over the past century, from the AK-47 and M16 rifles to modern systems like the F-22 Raptor, MQ-9 Reaper, and hypersonic weapons, each ...