Stones Throw have just released an interesting set/series via their Now Again Label.
Looking at it HERE it is a fine example of how re releases ought to be done, it's well presented with lots of interesting back ground information. It is completely obscure of course.
They also let you have a free taster track.
"Now-Again Records is proud to present Hell Below, three complete albums from the winners of the US Army's First and Second Annual Original Magnificent Special Services Entertainment Showband Contests. Consisting of nearly two hours of heavy funk and soul music from the United States Army soldiers enlisted in the 70's"