He made his debut on 7 December 1941 in a friendly match against Slovakia, which finished as a 4–0 win for Germany.
He earned his second and final cap on 18 January 1942 in a friendly against Croatia, which finished as a 2–0 win.
[2] During World War II, Riegler served in the Wehrmacht within Austria and in the Netherlands during 1942-43 until he was discharged after serving time in military prison at Gemersheim, Germany.
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