With just a handful of men...

ARTILLERYMAN: And what's so bad about living underground eh? It's not been so great living up here, if you want my opinion.

ARTILLERYMAN: We'll send scouting parties to collect books and stuff, and men like you'll teach the kids. Not poems and rubbish - science, so we can get everything working!

ARTILLERYMAN: Nothing can stop men like us. I've made a start already. Come on down here and have a look.