Adolf Hitler was a german soldier in World War I.
Explanation
The statement "Adolf Hitler was a German soldier in World War I" is true. Hitler served as a soldier in the German army during World War I. He joined the Bavarian army in 1914 and was assigned to various units, taking part in several major battles. He was wounded twice during the war and received the Iron Cross for his bravery. Hitler's experiences in the war, including witnessing the devastation and aftermath, played a significant role in shaping his nationalist and anti-Semitic ideologies that would later lead to his rise to power as the leader of Nazi Germany.