Warlord = event boss (Warlord Challenge). In-game text says it deals more damage to mounted and less to ground, BUT testing shows cavalry-only is still least-wounded (e.g. L1: t11 ground 96k -> 6,367 wounded vs t11 cavalry 96k -> 3,372) -- stick to mounted. Zero-wound cavalry: L1 13M = t11 270k / t12 100k; L2 24.6M = t12 400k; L3 85.6M = t13 900k; L4 154.8M = t14 1.6M; L5 225.2M = t14 1.59M -> ~25k wounded. Drops resources, refining + research stones, speed-ups. Doctrine (all normal/most event bosses): fight with only the single highest tier of MOUNTED cavalry, one wave, to one-round-kill for zero wounds; buff mounted attack first, count second. Skill books: Mounted Attack Against-Monster Lv4, Mounted Attack Lv4, March Size Lv4. Add an AGAINST-MONSTER debuff (not a normal debuff), e.g. Dragon Equipment Set (4); monster Def debuff caps at -50% (5x set). In a rally only ONE joiner needs the against-monster debuff -- it does not stack across joiners. Monarch Talent Lv6 'Mortality' halves wounds. Rally-join = 1 general + 1 mounted troop (loot-agnostic).
Original research source: Evony Guide Wiki