Great news. From now on, all Units you enlist at the Black Market will report DIRECTLY to your Stronghold’s Catacombs, without pausing to admire the Shield Maidens, having a pint at the tavern, passing “Go” or otherwise dilly-dallying! Most importantly – without being killed by attacking armies or dying of thirst. That’s right – Units you get at the Black Market will no longer be at risk if you don’t have enough Fire Ale to maintain them at the moment of purchase.
That being said, they’re not going to do you much good holed up in there. You should still get your Fire Ale production up to scratch so you can make use of your new Units on the battlefield!