If there is only one son will that son be deported to the military or because he is the only child he will not be deported? (In the United States)

Answer 1

In the United States, the concept you're referring to is often associated with the "Sole Survivor Policy." Under this policy, individuals who are the sole surviving son or daughter from a family where a sibling or parent has died as a result of military service, to certain conditions, may be excluded from involuntary conscription or deployment in hostile situations or during wartime.

Historically, during drafts, there have been some considerations given for family circumstances, but the United States hasn't had a draft since 1973. Currently, military service in the U.S. is entirely voluntary, and there is no conscription. Therefore, no one, whether an only son or otherwise, is currently at risk of being involuntarily drafted into the military.

If there were ever a reinstatement of the draft, policies such as the Sole Survivor Policy could potentially play a role again, but as of now, all military service is voluntary, and no one is involuntarily deported (drafted) into the military due to their family status.