Private Paparelli's age is given in this episode as 31. Billy Sands was actually less than two months shy of his 48th birthday.
While they shared no scenes together, series regular Terry Carter (Sugie Sugarman) and J.D. Cannon (Sherman the Shark) would go on to costar on McCloud on 1970.
A number of very attractive actresses have appeared on this show and when trying to find their names don't even see them mentioned even as "uncredited". At the very end there is an extremely beautiful actress playing a waitress that actually has some lines and is a major part of the last joke. Not likely any of the cast and crew are still around to ask, so another name lost to time.