Zima, bolest, smrt, málo jídla, krysy... zákopová válka byla peklo. By Frank Hurley - State Library of New South Wales file:a479035http://acms.sl.nsw.gov.au/album/albumView.aspx?acmsID=423850&itemID=824019, Public Domain, https://commons.wikimedia.org/w/index.php?curid=9105737