The Wehrmacht next moved against the cut-off Allied forces, moving along the seacoast with only small Allied forces to resist them. After the capitulation of Belgium on 28 May, a gap had also appeared on the eastern flank of the Allied forces, which had been forced to retreat into a small pocket around the seaport of Dunkirk. From this pocket the bulk of the BEF and a considerable number of French troops had been evacuated in Operation Dynamo, but these troops had left behind virtually all of their heavy equipment (transport, tanks, artillery and ammunition). The French First Army had most of its units pocketed around Lille. Those of its units evacuated from Dunkirk were relanded in France, but saw no further action; they were still being reorganised in Brittany at the fall of France.