I was randomly browsing that great repository of plot devices,TV tropes ,when I came across this bullet point on the page about harpoon guns:
So has anyone heard of this book named Undead? is it perhaps a title change in certain countries? any information would be much appreciated
tv tropes said:
Terry Pratchett uses "bow-gonne" harpoon guns in the Discworld book Undead; the gonne (gun) is central to the plot in Men At Arms.