Complex sentence: Searchlights were first used in the First World War to create "artificial moonlight" to enhance opportunities for night attacks, a practice which continued in World War II. Artificial moonlight was invented by historian and tank warfare theorist, General J. F. C. Fuller.
Split into simpler sentences: Searchlights were first used in the First World War to create "artificial moonlight" to enhance opportunities for night attacks, a practice which continued in the Second World War. "Artificial moonlight" was invented by the historian and tank warfare theorist, General J. F. C. Fuller.