"In honor of our fathers" - "One Khan, One Clan" [Campaign 3, Mission 2]

Cyclopes are one of the strongest units in the game; only dwarven godzillas and warlock dragons at their level can somewhat compete with them in terms of usefulness. In the fifth mission, 50 cyclopes, in a single attack without luck, could take down 60 titans. They have good stats, splash damage, the ability to stun, break walls, and frenzy... And when combined with leaders, they completely dominate. And during recruitment, you can buy a ballista and upgrade the skills for it, then go and shoot everything down; it's a shame that Kujin didn't have it available in the final battle of the last mission. Cyclopes and shamans are not needed if you play without auto-battle.