Complex sentence: The World War II 91st Bombardment Group (Heavy) was an Eighth Air Force B-17 Flying Fortress unit assigned to England, it was one of the first USAAF heavy bomb groups deployed to Europe in 1942.
Split into simpler sentences: The World War II 91st Bombardment Group (Heavy). An Eighth Air Force B-17 Flying Fortress unit assigned to England, it was one of the first USAAF heavy bomb groups deployed to Europe in 1942.