Conversation so far:
What was Charles V, Holy Roman Emperor's involvement in France?
Much of Charles V, Holy Roman Emperor's reign was taken up by conflicts with France, which found itself encircled by Charles's empire while it still maintained ambitions in Italy.
What was Charles V, Holy Roman Emperor's first conflict in France?
The first conflict between Charles V, Holy Roman Emperor and Francis I of France was over Burgundy and Francisc I's support of Henry II's claim over Navarre.
Did Charles V, Holy Roman Emperor fight any battle in France?

Question: Did Charles or Francis I have any allies in the war?
Self-contained rewrite: Did Charles V, Holy Roman Emperor or Francis I of France have any allies in the war?