Complex sentence: In July 1780,5,000 veteran French troops led by the "comte" de Rochambeau arrived at Newport, Rhode Island to aid in the war effort; French naval forces then landed, led by Admiral François Joseph Paul de Grasse.
Split into simpler sentences: In July 1780,5,000 veteran French troops led by the "comte" de Rochambeau arrived at Newport, Rhode Island to aid in the war effort. The French naval forces later arrived led by Admiral François Joseph Paul de Grasse.