Sgt Maj Jennings was a soldier in the 2nd Battalion Royal Warwickshire Regiment, which surrendered to German forces along with troops from the Cheshire Regiment, the Royal Artillery and French troops.
They were taken to a barn in La Plaine au Bois near Wormhout and Esquelbecq in France on 28 May 1940, where SS soldiers threw in stick grenades.
Sgt Maj Jennings threw himself on top of one of the grenades to try to save other soldiers.
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It will be another misty and cloudy start to the day.
Another rather cloudy day, with the easterly wind continuing to bring low cloud in from the North Sea.
Some mist and hill fog tonight. Brightening up on Thursday.