Commando Comic #1686: 'A Fighting Chance' (1983)
 
To stay alive in war you’ve got to have an edge over your opponent, something that can swing the odds in your favour. It might be the element of surprise, or a hidden weapon, but it’s always something that puts you one jump ahead and keeps you alive.
 
When he was taken prisoner, Lieutenant Neil Bell’s edge seemed to be his ability to navigate the desert, but what he was relying on was a piece of information which gave him a clear advantage over his captors.
 
And he wasn’t telling anyone what it was!