E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Colours Nailed to the Mast (With our), à outrance.
If the colours are nailed to the mast, they cannot be lowered to express submission.
1
If they catch you at disadvantage, the mines for your life is the word; and so we fight them with our colours nailed to the mast.Sir W. Scott: The Pirate, chap. xxi.