In my version of the book Jingo on page 42, Sergeant Colon is talking to Corporal Nobbs in the docks. Nobby says something about the priests in Klatch being no different than in Ankh Morpork. Colon then says I hope you're not being unpatriotic but instead of Colon saying it the book says that Cohen said it. Cohen is an old aged barbarian who appears in some of the other discworld books but not it appears in this one apart from that small reference.