1209 - Albigensian Crusade (the famous incident at Beziers happened when papal legate Arel Arnaud said "Kill them all, God will know his kind.")
1209 - The Inquisition as institution of Christianity is officially established
1212 - Children's Crusade - (admittedly, a possible myth) when 20,000 children marched to the Mediterranean Sea to board ships for the Holy Land, but were instead sold into slavery.
1228 - Sixth Crusade
1232 - Northern Crusades
1248 - Seventh Crusade
1251 - First Shepherd's Crusade
1270 - Eighth Crusade
1271 - Ninth Crusade
1281 - Aragonese Crusade
1320 - Second Shepherd's Crusade
1348 - Jews, believed to be the cause of the Black Death were massacred in Mainz, Germany
1365 - Alexandrian Crusade
1396 - Nicopolis Crusade
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