I think it's the other way around. The chapel at St. Cyr had a single entry for "the Class of 1914" on its WWI memorial tablet, which would imply that all, or at least most of them, were killed in action.
http://books.google.ca/books?id=ELc...v=onepage&q="st cyr" "class of 1914""&f=false
I was surprised when I read that at first, but I remember the source looked credible. You are correct however, that it doesn't seem likely. Checking a little further I found this:
1914 : Promotion La Grande Revanche : Sur les 774 élèves intégrés, 428 sont tombés au « champ d’honneur ». Concernant les survivants, 87 % ont été blessés souvent plusieurs fois, 12 % réformés pour invalidité, 25 % prisonniers de guerre.
774 in class of 1914. 428 Killed in action. 87% of survivors wounded several times. 12% discharged as unfit. 25% prisoners of war.
Haven't found out what proportion of Sandhurst cadets of 1914 survived, but 3714 former cadets were killed in action.




















































