Complex sentence: In the 1915 final, Sheffield United beat Chelsea 3--0 at Old Trafford in the last final, which became known as "The Khaki Cup Final" owing to the large number of uniformed soldiers in attendance.
Split into simpler sentences: In the 1915 final, Sheffield United beat Chelsea 3--0 at Old Trafford. The final became known as "The Khaki Cup Final" owing to the large number of uniformed soldiers in attendance.