So, reading a book on the preparations around Operation Sealion and came across an incident in 1940 where British forces were testing a weapon designed for anti-tank measures. During such demonstrations, one of the shots came close to hitting a crowd which included De Gaulle and Jan Smuts. So, let's go for there being a misfire of some sort and it hitting the crowd, but only killing De Gaulle, what happens then? Would the incident be revealed or successfully covered up? What would this do for Free France and other effects to the war effort?