In 1852, Ackermann's published a set of large colored lithographs illustrating the Kaffir War. Once again, Martens created the master painting for each plate which was engraved by Harris, but in this case, the source was Captain George Jackson Carey of the Cape Mounted Rifles who provided the artist with sketches; another sketch was supplied by Thomas Baines. While these lithographs are stirring renditions of colonial warfare, it is doubtful if Martens ever experiences fighting himself.