After far too many drinks, a man boasts to his drunken pals he can knock at any random house and get 50 pounds just by saying "I know all about it, pay up or I will tell". He picks the wrong house to carry out this escapade.
Loyalty and honour between brother and officer is part of the unwritten code of the Army - an admirable tradition. But can it ever justify the kind of blackmail used against Trooper Tanner by Woodthorpe and Endean?