@darren316 It's pretty standard in the intel world to reveal a lot less of what you know, because the other side will then know you know, and also wonder how you knew. The British, for example, had ample warning of the invasion of Crete via the Ultra decryption program, including a detailed order of battle; but they couldn't pass specifics along to the island's defenders because the Germans would then have been given hints that their messages were being intercepted. Only information also obtainable from a different source could be passed on. In the end this proved the wiser course; losing the battle on Crete helped maintain Ultra, which won the intelligence war.