Looking for something else I found the below map (minus any credits or origin). It may be of interest and although the Long March / Marches is known to me - slightly - I cannot recall seeing such a map before. From: My POW Collection Which refers to South African POWs.
David, The attached map from "The Last Escape" by John Nichol and Tony Rennell puts your first map into context. The prisoners from Luft III ended up going a) Milag und Marlag Nord b) Stalag IIIA Luckenwalde c) Stalag XIIID Nurnberg and d) Stalag VIIA, Moosburg. The chaps at Milag were liberated by the British, Luckenwalde by the Russians and Moosburg by Patton. Book is available for free The last escape : the untold story of allied prisoners of war in Europe, 1944-45 : Nichol, John, 1963- : Free Download, Borrow, and Streaming : Internet Archive Regards, Dave
