Complex sentence: The 10th Battalion was disbanded in November 1945, but when the Territorial Army was reformed in 1947, a new battalion now called the 10th (City of London) Parachute Battalion (Territorial Army) was raised.
Split into simpler sentences: The 10th Battalion was disbanded in November 1945, but when the Territorial Army was reformed in 1947. A new battalion now called the 10th (City of London) Parachute Battalion (Territorial Army) was raised.