Revolutionary War not about religion. War of 1812 not about religion. Mexican War not about religion. Civil War not about religion. Spanish-American War not about religion. World War I not about religion. World War II not about religion. Korean War not about religion. Vietnam War not about religion. Gulf Wars not about religion. Not many other wars were over religion. Other than the Crusades and the minor wars the French fought, name some more. Were do you get these statistics that more people were killed in wars over religion than any other?