Complex sentence: It accompanied the brigade on operations, seeing service in the Normandy landings in 1944, and the River Rhine crossing in 1945, after which they remained in Germany following the advance until the end of the war.
Split into simpler sentences: It accompanied the brigade on operations, seeing service in the Normandy landings in 1944, and the River Rhine crossing in 1945. After which they remained in Germany following the advance until the end of the war.