“The good old days!” The sergeant major laughed. “But of course we should never forget Mr. Churchill’s unique recipe for invisible ink.” “Urine is cheap, effective, personalized and in moments of intense danger, readily available!” Rishaan was fascinated. These old gentleman had lived a great life; he wished that he too could have such an interesting existence. “And it is from your talents in the science of secret codes that I now seek advice, sergeant major,” said Churchill, pulling out a piece of paper from his jacket. “I have a connection in Germany. He is a very brave man who has been close to the Nazi rearmament program. After the Great War, the Germans were only allowed to have 100,000 men in their army, and no airplanes. This piece of a paper is part of a message sent to me by t

