Blitzkrieg, meaning "lightning warfare," was a German military strategy used during World War II that emphasized rapid, overwhelming force concentration. It combined tanks, motorized infantry, artillery, and air support to break through enemy lines, dislocate defenses, and achieve swift, decisive victories through maneuver and encirclement. Though never an official German doctrine, the term became synonymous with their early, highly successful campaigns.
Sources
[1] Karl-Heinz Frieser
[2] The Blitzkrieg Legend: The 1940 Campaign in the West (Naval Institute Press)
[3] David Reynolds
[4] The Long Shadow: The Great War and the Twentieth Century (W. W. Norton & Company)