Complex sentence: In 1917, what would become the Royal Air Force station RAF Uxbridge was established within the grounds.In military use, the house has served over time as the first headquarters for No.11 Group RAF and RAF Bomber Command.
Split into simpler sentences: In 1917, what would become the Royal Air Force station RAF Uxbridge was established within the grounds. Under the ownership of the military, the house has served over time as the first headquarters for No.11 Group RAF and RAF Bomber Command.