In Sharpe's Regiment, you mention a song that Sergeant Harper teaches the men as they march: "Drummer Boy".
Was this an actual song? I've search and searched online and keep coming up with a Christmas song. Harper's song, per your book, mentioned exploits, and the colonel's wife (so probably not a Xmas song) Thanks for the many hours of enjoyment your writing has given me.
I’m sure that was fictional – I have collections of soldiers’ songs from the period, but all are far too bowdlerised to be typical, so I resorted to fiction!