The Battle of Kursk - A History of Human Warfare

Kursk was transformed into one of, if not the largest defensive systems in the history of human warfare. The sylviats knew they wouldn't be able to hide all this movement, so they did as much of as they could in the open. 300 thousand civilians were put to work digging ditches, building roads, airfields and bridges that the defensive fortifications would need. And each one tho about hundred an 60 people apiece, supported by pretty much every free hand they could find.