Most of the ones I knew were from WWII. There was rather less need to 'sex-up' dossiers on the capabilities of Rommel's army. They explained how you could dete

Most of the ones I knew were from WWII. There was rather less need to 'sex-up' dossiers on the capabilities of Rommel's army. They explained how you could detect barbed wire in photos with >feet resolution by the patterns of wear animals left on the ground near it, or find underwater tank traps on Normandy beaches by the change in the wave patterns