Do Event-Obtained Troops Cost Upkeep?

[Meglobob]

I would like to see the militia event deleted from the game, its unnecessary micro, as it becomes a case of how can I kill those militia as fast as possible.

If its meant to be a 'lucky' event replace them with heavy infantry or archers or something more useful.

I have had 500+ of the little cowardly chaff draining my treasury before now...