World War II
Prisoner of War Records
The Army Heritage and Education Center may contain some POW accounts
If you know what camp the person was held in, google the name of the camp. You may find a google group or blog dedicated to that camp
Axis History Forum has a forum for POW information
Pegasus Archive includes stories and photos of WWII POW experiences
The Digital Library of Georgia in partnership with the Southwest Georgia Regional Library has made available video recorded interviews from 50 WWII veterans from Bainbridge, GA. You can view the interviews on-line through YouTube