I watched this dramatization some years back and thought it did an excellent job of telling the real-life story, capturing the desperation of the retreat, case in point, only smoke bombs for one group of soldiers tasked with holding back the German tanks!
Buy it on Blu-ray or DVD if you can find it. Perhaps its also downloadable. Its well worth the time spent watching it.
After watching this re-enactment, I found Nolan's 2017 Dunkirk to be an utter disappointment. It greatly saddened me to see how the Dunkirk story could be so badly told, and more so when I read reviews about how it gives you a sense of what war is like - rubbish. These people really should watch the 2004 Dunkirk dramatization and Saving Private Ryan, and I'd also recommend Schindler's List.