Here are new arsenals and units when meeting the UENDA. There's also gonna be changes from original game/story.

Prism tank

Kaiser Fortress Bomber

Phalanx (now it can drive on both land and sea)

Ares interceptor

UAN Titan

Zeus Battleship

Peacekeeper Sentinel

UAN Air Defender

Assault Bike and Mortar Trooper

Mirage Commando

Battle Fortress

Longbow Liberator

Solar Tank (It fires solar beam cannon) (Paradox mod)

Phoenix Fighter

Mercury-class destroyer

MARS tank

Sonic tank

Crusader-class battlecruiser

Sniper (red alert 2 version)

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The Hummer

Ranger