Nations
United States
The United States wins with technology and the air. Apache gunships hunt tanks, Javelin teams out-range enemy armor and the Reaper drone strike picks off key targets. Units cost a little more, so keep them alive: veteran Abrams and Apaches are worth far more than fresh ones. Finish with a Tomahawk salvo on the enemy base.
Russian Federation
Russia hits hardest. T-90M and Armata tanks shrug off damage, the TOS-1A thermobaric launcher wipes out infantry and light vehicles, and the Pantsir closes the sky. Russia is slower, so push in a single heavy wave and let Krasnopol barrages and the Iskander strike soften the defenses first.
People's Republic of China
China wins by numbers. Infantry is cheaper, so flood the map early, capture every oil derrick and swarm the enemy before they tech up. PHL-16 rocket launchers and Z-10 helicopters add punch, and the DF missile storm can erase a whole base.
Israel
Israel is the hardest nation to break. Iron Dome intercepts rockets, missiles and shells, the Merkava's Trophy system protects it from anti-tank fire and the Namer carries infantry safely to the front. Turtle up, let the enemy waste its fire on your defenses, then counter-attack with F-35I strikes and the Jericho missile.