Re phrase the question as it presupposes that the child is sent to war.
Would you 'send' or encourage your child to join the Armed Forces as they may be sent to war. The addition 'if you knew there was little chance of returning' is sheer sophistry.
In about 56 years of service my sons in law and daughter served 6 OOA deployments. Not a huge amount as compared with the Army. I think my daughter might have been the one nearest incoming.