Short Film – Set in WW2 : Dunkirk – The lesser known Story of the Rear Guard Action in 1940 April 27, 2018 Unipro2013main Short Films – Set in WW2, War Movies the Rear Guard ActionThe lesser known Story of the rear Guard Action of Dunkirk in 1940. Against almost impossible odds five soldiers must defend an area of strategic importance several miles inland of Dunkirk.