If i want to find imformation about my dad who served in the vietnam war,how do

Question:

Best Answer - Chosen by Asker: If he is alive, talk to him. If he's deceased, speak to family members about what he may have told them.

If he was in the US army, for free from you computer you can register for a three day free trial at ancestry.com. Then search these databases:
http://www.ancestry.com/search/db.aspx?d... if he is deceased and buried in a military cemetery.
http://www.ancestry.com/search/db.aspx?d... if he was decorated.
http://www.ancestry.com/search/db.aspx?d... if he was wounded.
http://www.ancestry.com/search/db.aspx?d... if he died in battle or from wounds received in battle.

Also check out this page of links for state level databases: http://www.usigs.org/library/military/li...