De Gaulle 4eme DCR fought in Moncornet on May 17, then in Abbeville 10 days later on May 27. Both times with limited success.
One can ask, where was De Gaulle and his 4eme DCR when you need them - on May 22 - 23, the day the French and British attack from Arras in the direction of the south ?
https://www.chars-francais.net/2015/index.php/journaux-de-marche/liste-des-journaux?task=view&id=596
The 4eme DCR moved from Montcornet > Laon > South of Amiens
On May 23, the 4eme DCR was in AILLY-sur-NOYE.
https://www.google.fr/maps/place/80...f13e81622180!8m2!3d49.756772!4d2.362273?dcr=0
Ailly-sur-Noye is south of Amiens, and 50 miles south of Arras.
Make no mistake: I do know that De Gaulle is not a silver bullet.
And his DCR was part of Altmayer army.
Still I wonder. Imagine De Gaulle DCR did not fought in Moncornet and landed in Ailly sur Noye three days earlier. Then, coordinate De Gaulle attack with the BEF from Arras.