How many troops were stuck on the beaches of Dunkirk awaiting rescue?

During the Dunkirk evacuation in May and June 1940, approximately 400,000 Allied troops were stranded on the beaches awaiting rescue. Of these, around 338,000 soldiers were successfully evacuated to Britain through a massive operation known as Operation Dynamo. The situation was dire, with many troops facing the threat of enemy attacks while waiting for evacuation.