This is a translation of a letter which claims to be copy of a letter sent by a young Croatian man to the Croatian Secretary of Defense to avoid military service. An extraordinary piece of reasoning, worthy of attention of anyone interested in logic, genealogy and other related matters. Dear Minister of Defense, Please allow me to explain my situation in a hope that you will be able to resolve my case. I am expecting to get the call to serve in the Croatian Army. I am 23 and I married a 47 year old widow who has a 26 year old daughter. Her daughter subsequently married my father. By marrying my wife's daughter, my father became my son-in-law. In the same time, my wife is a mother-in-law of my father, and her daughter is now also my step-mother. In September my wife and I got a son. Clearly this child is a brother of my father's wife, and thus a brother-in-law of my father. In the same time, my son is also my uncle because he is a brother of my step-mother. In October my father's wife got a son as well. This child is now also my brother because he is a son of my father. But I am the step-father of my wife's daughter and also a brother of her son whose father is also my father. Thus, my father's son is also my step-grand son because he is a son of my wife's daughter. Consequently, I am a brother of my own step-grandson, so I am also my own step-grand father. However, according to the law, not more then two consecutive generations of fathers and sons (grand-father, father, son) can be called for military duty simultaneously, so I should be relieved from the Military duty. Thank you for your understanding. The reply of the Croatian Ministry of Defense was sent only two weeks later, and it read: The applicant is permanently relieved from the military duty due to possible mental problems and mental instability caused by the chaotic situation within his family.