The musical of The Scarlet Pimpernel opened on Broadway in 1997. It was never hugely successful there but it had enough devout fans that it was revived and revised a few times and has been produced often in various versions, never quite getting the reception it probably deserves. This clip is from the original Broadway presentation and it features Douglas Sills, who played Percy, in what I think is easily the best number in the show.
It's a heroic, uplifting tune in which Percy and his "bounders" are pledging to go off and fight one of those battles that you'd have to be nuts to think you could win. In the show (SPOILER ALERT!) they do, but it doesn't usually turn out that way in real life. Every time I hear someone say in a burst of misguided bravado that they're going to accomplish something that seems to me impossible and perhaps suicidal, I hear this song playing faintly in the background…