Complex sentence: She served through both world wars under two different names and also had a lengthy career as a civilian fishing trawler and as a support vessel for a famous transatlantic flight by a group of Italian bombers.
Split into simpler sentences: She served through both world wars under two different names and also had a lengthy career as a civilian fishing trawler. For a short while, she functioned as a support vessel for a famous transatlantic flight by a group of Italian bombers.