Thanks for pointing that out, FM- I'd not read Edi's posted lyrics. That error annoys me greatly too, but it is correct in the DT, where my link takes you.

Another (relatively minor) change that bothers me though, is the first line of the refrain. Bogle wrote:

Did they beat the drum slowly, did they sound the fife lowly?

which is a quotation from an earlier song, and adds a lot to the mood of the song.