Germany's use of tanks, armored columns and dive bombers in close coordination was known as blitzkrieg. Translated into English the word blitzkrieg means lightning warfare. Since Hitler's time the word "blitz" has been adopted into the English language. It is frequently used in describing a mass assault on a quarterback in football. During the Battle of Britain, the English used the word "blitz" to describe the massive bomber attacks on London and other cities. Hitler's blitzkrieg tactics were extremely effective because they were new to warfare. Germany conquered France with such tactics in about one month and shocked the entire world.