Redhen, that is exactly like our family's situation. My Dad adopted my brother (our mom got left at the alter by my brother's dad when she was pregnant). My brother was never told and found out when he enlisted. He probably has other siblings that he missed out on knowing not to mention having been told of his medical history from that side of the family. People forget that there is a slew of things that adopted kids miss out on (even if they've been adopted by great people).