Noun
no quarter (uncountable)
(military) No mercy; no sparing the life of a captured opponent.
If you surrender, you shall be treated as prisoners of war, but if I have to storm your works, you may expect no quarter. Nathan Bedford Forrest
The great increase of our population throughout the Union will alone produce an important effect, and in no quarter will it be so sensibly felt as in those in contemplation. James Monroe
One of the Knights of the Order of No Quarter, Treasure Knight is fought on the Iron Whale, where he uses his anchor and various water- and money-based powers to try and take the player down. Source: Internet
No quarter will be given! Source: Internet