Gun(枪械类)
All basic infantry do Gun type damage. Gun damage is effective against heavy infantry, scouting infantry, and a few different landed aircraft. Against vehicles gun type damage is rather weak, so its best to use something else.
A complete list of units that deal Gun damage:
Imperial Warrior, Peacekeeper, Conscript, Combat Engineer
(帝国武士、维和步兵、动员兵、战斗工程师的手枪)