Night Watch is a fantasy novel by British writer Terry Pratchett, the 29th book in …
They attacked the other Houses, and what’s the Night Watch ever done to hurt them?’ ‘Nothing,’ said Vimes. ‘There you are, then.’ ‘I mean the Watch did nothing, and that’s what hurt them,’ said Vimes.
— Night Watch (Discworld, #29; City Watch, #6) by Terry Pratchett (Page 192)