What are the effects Dunkirk had on the germans?

Impact of Dunkirk While the German blitzkrieg was undoubtedly successful (France would call for an armistice by mid-June 1940), the largely successful evacuation of the bulk of Britain's trained troops from near-annihilation proved to be a key moment in the Allied war effort.

the answer to fill in the blank in this question would be the word resource, it is defined as the money, material or people (since human resource is a very valuable good) that a company or a person has at disposition (meaning they can use the resource as they see fit), to be able to complete a task or achieve a goal.  

where is the picture