Teutonic knights committed crusades under what religion?
Drang nach Osten:  In some historical discourses, "Drang nach Osten" combines historical German settlement in Central and Eastern Europe, medieval (12th-13th centuries) military expeditions like the ones of the Teutonic Knights (see Northern Crusades), and Germanisation policies and warfare of Modern Age German states like the Nazi Lebensraum concept. Northern Crusades: The Northern Crusades or Baltic Crusades were religious wars undertaken by Catholic Christian military orders and kingdoms, primarily against the pagan Baltic, Finnic and Western Slavic peoples around the southern and eastern shores of the Baltic Sea, and to a lesser extent also against Orthodox Christian Slavs (East Slavs).
Catholic