Myself and a german veteran have just privately published his autobiography of his years as a combat fallschirmjager machine gunner.
The book contains great detail about fallschirmjager equipment and scenarios which can definitely aid a modeller.
Apart from that the book is a great true story and an exremely rare account of a member of Germanys elite paratrooper force.
See:
http://homepages.win.co.nz/bphprint/frames7.html