Combined Arms

Combined arms warfare is the coordinated employment of multiple combat arms in a way that creates dilemmas for the enemy. When infantry, armor, artillery, and aviation operate together effectively, the enemy cannot optimize their defense against any single threat without becoming vulnerable to another. A force that takes cover from artillery becomes vulnerable to advancing armor; a force that deploys anti-tank weapons against armor becomes vulnerable to infantry and air attack.

The concept dates back centuries but reached its modern form in World War II, when Germany's integration of tanks, mechanized infantry, artillery, and close air support proved devastatingly effective. The Allies learned and adapted, and by 1944, combined arms operations were the standard approach for all major armies. The Gulf War in 1991 demonstrated the concept at its most refined, as U.S. forces integrated armor, infantry, attack helicopters, artillery, and precision air strikes to destroy Iraqi forces in 100 hours.

Modern combined arms extends beyond traditional ground forces to include cyber operations, electronic warfare, space assets, and unmanned systems. The U.S. Army's Multi-Domain Operations concept envisions combined arms effects across all domains, land, air, sea, space, and cyberspace, synchronized to overwhelm an adversary's ability to respond effectively.