S Sgt Ellis E. Montgomery

Good day all,
 
I am trying to find out any information about S SGT Ellis E. Montgomery of Superior, Neb..  According to what I know he was MIA over Kassel 01/01/1945 with the 407th BS. He is the youngest brother of my grandmother who is deceased. Was he assigned to 92BG before this flight ?  According to the story told to me by my father, he , Ellis was sitting in a depot, having completed his tour, to go home. A request for volunteers was made and he went to never return.
Any help with this or people who knew him would be awesome!!!!!!!
 
Great Thanks,
 
Gary Doxon
Maywood, Ne