S4·E8 The Two and a Half Feathers

Elderly ex-soldier Clarke joins the platoon and, by coincidence, it turns out that he and Jones were in the same regiment in 1890s Sudan. However, he paints a picture of a cowardly Jones who left him to his fate when he was captured by Dervishes, and soon after Jones receives two feathers, signifying cowardice, through the post. Jones then tells his story where all the participants look like members of the present; he and Clarke were indeed captured but he rescued Clarke and kept quiet about his affair with the colonel's wife. Mainwaring is satisfied with Jones's account but before he can confront Clarke, Clarke departs.