at the end Process_end of the great retreat Escaping , the race to the sea began Process_start , a period of reciprocal attempts by the germans and franco-british to outflank Besieging their opponents , extending Change_event_time the front line northwards from the aisne , into picardy , artois and flanders .

at le havre , from 10 to 13 june , troops from unk , other british units in the port and allied forces were evacuated Escaping ; attempts by the franco-british to prepare a `` national redoubt '' in brittany came to Self_motion nothing .