Has anyone done this before? removing armor off these big fellas during combat.
Just test it yourself. Or use the AoE2 combat simulator. Or watch a MikeEmpires vid.
Armour isn’t the biggest deal when you have like 650 HP. War elephants also do a lot of trample damage. The only thing that works against more than a few war elephants is monks.
Siege Onagers also work, if you can mass them and guard them with halbs.
Obuch + arbalest may actually perform quite well tho, its almost likr having genoese crossbow