"sudden overwhelming attack," 1940, shortening of blitzkrieg (1939). The use in U.S. football is from 1959. As a verb, 1940, from the noun. Related: Blitzed; blitzing.
To polish one's brass buttons, etc; prepare for inspection
[WWII armed forces; fr Blitz Cloth, trademark for a brand of metal-polishing cloth]
[fr German Blitzkrieg, ''lightning war,'' an overwhelmingly heavy and rapid attack, using tanks and other armor, bombers, etc]