As in Britain, a program of camouflage and decoy sites was set up to confuse bombers trying to identify industrial targets in difficult nighttime conditions. The largest and most effective site was at Essen, where the vast Krupp works was reproduced in effigy in the countryside outside the city and sustained, according to German Air Force estimates, around three-quarters of the bombing attacks aimed at the real plant. Decoy sites outside Stuttgart and Karlsruhe attracted well over half of all bombs in 1941.179
