Complex sentence: He was born on 17 January 1918 in Karlsruhe, Mühlberg and became a member of the Hitler Youth, he joined the SS in 1937 and a year later signed on for four years with the SS-Verfügungstruppe.
Split into simpler sentences: He was born in Karlsruhe-Mühlburg and became a member of the Hitler Youth. He joined the SS in 1937 and a year later signed on for four years with the SS-Verfügungstruppe.