It’s a shame that Railag has a relatively small army. There isn’t a single dragon. However, all 6 types of units are upgraded. May the heavens help him, generously showering the enemy with enhanced meteor showers.
Throughout the entire mission, I didn’t have a single dragon. And I don’t think they’re needed! Railag used rain and phoenixes to defeat powerful armies with 4 assassins and 3 minotaurs per slot.
And units of levels 5-7 are just cannon fodder in this mission. It’s better to leave them to guard the cities – they’re useless in battle anyway, as warlocks will immediately hit them with ice shards, and they provide no benefit.