NATO troops in Afghanistan were so impressed with Prince Harry 's military service there last winter that they've saved the chat-room messages he sent on the job. They're not for most, but not because they are steamy or gory. It takes a military pro to decipher them since most are written in acronym-heavy code. Harry worked as a joint tactical air controller, meaning the No. 2 royal kid called in the coordinates for airstrikes against the bad guys. And he was smashing at his job, troops who worked with Harry tell Whispers. The secret messages are especially popular among British female soldiers, some of whom have kept them archived. "Who knows what they might be worth someday?" one soldier tells Whispers.