General Peter Pollock, the Navy Chief was visiting his colleague General Marshall, who was in charge of the Army. General Pollock arrives at the military camp and is greeted by Marshall. They both walk around the place, and Pollock asks: "So how are your men Marshall?" "Very well trained, Peter." "I hope so. You see, my men over at the Navy are so well trained, you could see they're the bravest men all over the country." "Well, my men are very brave, too." "I'd like to see that." So Marshall calls an under-trainee and says: "James! I want you to stop that tank coming here with your body!" "Are you crazy? It'd kill me, you idiot! I'm out of here!" As James ran away, Marshall turned to a bewildered Pollock and said: "You see? You have to be pretty brave to talk like that to a general."