 Charles VII of France and Philip the Good, Duke of Burgundy, then signed the 1435 Treaty of Arras, which allowed the Burgundians to return to the side of the French just as things were going badly for their English allies.With this accomplishment, Charles attained the essential goal of ensuring that no Prince of the Blood recognised Henry VI as King of France.Over the following two decades, the French recaptured Paris from the English and eventually recovered all of France with the exception of the northern port of Calais and the Channel Islands.