How to prove that my child's father is a soldier?

The evidence will be the child's birth certificate, where the father will be recorded as a military serviceman. In turn, the father can provide, if available, a certificate of a participant in hostilities, a certificate on the circumstances of the injury, a certificate on the draft of a conscript for military service, an extract from an order or a certificate of enlistment in a military unit, extracts from combat orders or orders.