If i can die for my country i should be able to buy a beer employs what type of logic?

The logic of 'if I can die for my country I should be able to buy a beer' indicates that if a person is old enough to go into the armed forces then he/she should be old enough as well to buy a beer and also that if one is going to sacrifice oneself for one's country then one should also have the privilege of being able to buy a beer,