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
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