 During the Battle of France, General Vuillemin repeatedly called for more British squadrons to come to the aid of French forces which were under severe attack from the German Luftwaffe.Commenting to General Edward Spears on 30 May 1940, the British Air Attaché in Paris, Air Commodore Douglas Colyer, criticised certain senior French officers saying that, while they had been very brave pilots in the last war, they were not sufficiently educated to command important formations now.In Colyer's view, included among these was General Vuillemin.