what Thralls were they ?
If they were T1 Exiles Fighters is OBVIOUS that they died without doing anything !

What I always find hilarious about this kind of threads is that the OP NEVER mentions what Thralls were used.

If I were to make a thread like this, I would say:

I used 20 Cimmerian Berserkers.
All of them were lv.20, with good perks, legendary greatswords, epic heavy hyperborean armors.

THIS gives a clear idea of what I used and how I lost.

If you just say “I lost 37 fighters with heavy armors” you didn’t say anything !

BTW: yeah, give them food and your thralls should heal themselves in combat …