Complex sentence: In 1899 "Stromboli" was deployed to the Far East, and she was joined by "Vesuvio" and "Ettore Fieramosca" were sent there in 1900 to assist the Eight-Nation Alliance in putting down the Boxer Rebellion in China.
Split into simpler sentences: In 1899 "Stromboli" was deployed to the Far East. She was joined by "Vesuvio" and "Ettore Fieramosca", sent there in 1900 to assist the Eight-Nation Alliance in putting down the Boxer Rebellion in China.