Man pages matching name freeciv-modpack in section 6:

freeciv-modpack.6.en	debian 10 / freeciv-client-extras
freeciv-modpack.6.en	debian 11 / freeciv-client-extras
freeciv-modpack.6.en	debian 12 / freeciv-client-extras
freeciv-modpack.6.en	debian 13 / freeciv-client-extras