Complex sentence: He joined the SS and became a member of Adolf Hitler's bodyguard unit in 1933 and attained the rank of SS- "Obersturmführer" (first lieutenant) in 1934.
Split into simpler sentences: He joined the SS and became a member of Adolf Hitler's bodyguard unit in 1933. He attained the rank of SS- "Obersturmführer" (first lieutenant) in 1934.