Complex sentence: William H. Bragg was appointed Commander of the Order of the British Empire (CBE) in 1917, Knight Commander (KBE) in 1920, and was admitted to the Order of Merit in 1931.
Split into simpler sentences: William H. Bragg was appointed Commander of the Order of the British Empire (CBE) in 1917 and Knight Commander (KBE) in 1920. He was admitted to the Order of Merit in 1931.