Crusader AA tank mounting a triple Oerlikon gun in a hull-down position, 19 July 1944.

Crusader AA - Oerlikon

At Louvain, three divisions of the British Expeditionary Force were in position on the Belgian right flank by May 13, 1940.  Troops of the French 1st Army held the line from Wavre to Namur, with the French 9th and 2nd Armies continuing to the Maginot Line.  When German Panzer divisions broke through and took Sedan on May 13, the Allied line from Antwerp to Namur was abandoned and a retreat executed to the Escaut.  The three British soldiers of the this anti-tank gun crew await the first glimps of German Panzers down the road.  Whether these men survived the encounter or not is now lost in history but I would think their chances would be rather slim.   

British Anti-Tank Gun Crew

Crusader AA comes ashore from an LST on to the pierhead at the Mulberry artificial harbour at Arromanches, August 1944.