Blitz (noun)

1. A sudden and intense military attack, typically one delivered without warning.
2. A sudden, intense, and sustained effort to achieve a particular goal.

Origin:

Late 19th century: from german blitz "lightning", used as a term in football (1935) and later in war (1940), from the verb blitzen "light up, flash".

Examples:

1. The city was subjected to a bombing blitz during the war.
2. The team is planning a blitz on the opponent's quarterback.
3. The company launched a marketing blitz to promote their new product.
4. The store is having a clearance blitz this weekend.
5. The team went on a scoring blitz in the second half of the game.