The Frontier Engineer is one of the new Frontier Militia units released in the 2.0 Patch. He carries a stick of dynamite, and has a pouch filled with more.The Frontier Engineer has only one attack: Small Grenade. There are two adaptations of Small Grenade, one to damage grounded units and one to damage aerial units. He is similar to the Grenadier used by the player, but sports more damage and . An immunity to cold is also a plus, though in arctic battles, the immunity will be of little help against the powerful Silver Wolf encounters.
- First attack gained the ability to hit air targets.