My half brothers were adopted they are lost to me, my last name is Diehr, Smith is theirs, how do I find them?

Question

They were in the Military

Answer 1

Please give more information--country where you live, country where you believe your brothers were born. Who told you your brothers were adopted? Get all the information you can from the people who knew your family before the adoption.

Answer 2

If their name is Smith, it won't be easy. Good luck!