By the middle of January the Armée de l'Air received 138 Bloch M.B. 151s.
By September 1939 there were 120 MB 151s and MB 152s delivered, but many lacked gun sights and even propellars.
Eventually the MB 151 was declared obsolete and turned into trainers.
A few MB 151s saw action against the Italian invasion in southern France in June 1940, but suffered heavy losses.
Greece received nine Bloch 151s.