Biography. He joined the army in 1934 (infantry regiment 8 in Frankfurt/Oder) and participated in the Invasion of Poland in 1939. One year later he was dismissed from the army by Hitler's Prinzenerlaß, following the death of his elder brother Prince Wilhelm of Prussia, who was wounded in France in May 1940 and later died in a Field hospital in Belgium.
It is believed that the last royal carrier of the disease was Prince Waldemar of Prussia, who died in 1945, Science Magazine reports. 14. She was the first monarch to ride a train.