A popular German idiom, "geht ran wie Blücher" ("charge like Blücher"), means that someone is taking very direct and aggressive action, in war or otherwise, refers to Blücher. The full German saying, now obsolete, relates to the Battle of the Katzbach in 1813: "Der geht ran wie Blücher an der Katzbach!" ("He's advancing like Blücher at Katzbach!"), referring to Blücher and describing vigorous, forceful behavior.