 Complete the following phrase:  When the German attack on France and the Low Countries of Belgium and the Netherlands began on 10 May 1940, 127th Brigade was assigned to Macforce, a scratch force commanded by the Director of Military Intelligence with the BEF, Lieutet-General Noel Mason-Macfarlane. Macforce assembled on 17 May with the role of covering the crossings over the River Scarpe As German pressure increased, the BEF was forced to 