If we had enough people, I'd scatter a few at each town and city, turning these desolate places into thriving settlements of my human race once again.
Doing this would solve lots of problems, one of them was the communication and spying net. I could select a few to serve as my eyes everywhere, delivering reports on a daily basis about the current situation of the place they resided in.
Also I could start forming local teams to defend these settlements, helping in relieving the pressure over my big armies to scatter and defend, and would leave my armies free for securing borders and raging big wars against other races.
So it all came down again to this population problem. Just recalling what happened in the first few days of the apocalypse made my blood boil.
There was no other race who tasted such brutality and unfairness like my humans. Don't tell me Selvators or Dragons ended up cornered in subways, butchered like cattle by monsters.