Between 1874 and 1877, Roux received a fellowship for the Military School at Val-de-Grâce, but quit it after failing to present his dissertation in due time.
Između 1874 i 1877 Ru je dobio stipendiju za vojnu školu u Val-de-Grace, ali je obustavljena nakon neuspeha da iznese svoju disertaciju u dogledno vreme.