Final answer:
Rochambeau's army helped the Americans during the American Revolutionary War.
Step-by-step explanation:
Rochambeau's army helped the Americans during the American Revolutionary War. The assistance provided by Rochambeau and his troops was crucial in the final stages of the war. They played a significant role in the decisive Battle of Yorktown in 1781, which led to the surrender of the British forces.
Learn more about Rochambeau's army and their assistance to the Americans during the Revolutionary War