The Navy regrouped and rebuilt, and within 15 years it was eager to join the fray when France intervened in the American Revolutionary War. Though outnumbered everywhere, the French fleets held the British at bay for years until victory. After this conflict and the concomitant Anglo-French War (1778–1783), the Navy emerged at a new height in its history. Major battles in these years include the Battle of the Chesapeake, the Battle of Cape Henry, the Battle of Grenada, the invasion of Dominica, and three separate Battles of Ushant.