Richelieu with the catches, inside, with Calvinistes and the large ones, can initially take only one indirect share with the Thirty year old war, fights keen of the Protestants against the house of Austria; it causes to him by its councils, its diplomacy and its subsidies, of the enemies in the Empire and out of the Empire, of the German princes, the king of Denmark and the king of Sweden Gustave-Adolphe.
But they are overcome the ones after the others, and the Protestants of Germany fall down at the thank you of Austria.
Finally pacified France, Richelieu intervenes directly in the Thirty year old war (1635); France rejoins the overcome Protestants and replaces Denmark and Sweden with the head of the enemies of Austria.
Conquest of Alsace, Artois and Roussillon.
France, which fights Spain at the same time as Austria and catholic Germany, pushes back initially triple invasion, in Picardy, in Burgundy and Languedoc, then it takes the offensive vigorously, conquers Alsace, Austrian province (1639), Artois and Roussillon, provinces Spanish (1640 and 1642).
The Swedes, its allies, gain in Germany victory over victory; Portugal and Catalonia are raised against Spain; the Voter of Brandebourg turns himself against Austria.
With the death of Richelieu (1642), the war is not finished, but the victory is ensured France.