Few as consequential as letting 338,200 soldiers in the British Expeditionary Force, and additional 140,000 assorted foreign troops escape through the port of Dunkirk. Losses of materiel, and ammunition were so great it limited the British war machine into the Africa campaign. These losses were made good by the US war manufacturing machine, which in the end supplied nearly every allied nation with a significant or even majority of war materiel necessary to win the war. Ultimately, WWII was won through industrial production. All protestations contrary, the USSR would have fallen had not the US produced, and delivered aircraft, train engines, train cars, jeeps, 6X6 trucks, fuel, and food among myriad other items.
The memorial reads: "To the glorious memory of the pilots, mariners, and soldiers of the French and Allied armies who sacrificed themselves in the Battle of Dunkirk, May–June 1940."