The tour Traveling began Process_start with an eleven-week European leg Social_event , which kicked off Motion in Lille , France in mid-May and culminated Coming_to_be in London in late July .

A second attack Attack took place Process_start on 28 June , as part of a series of feints , intended to simulate a threat to the cities of Lens in the First Army area and Lille in the Second Army area .

From 28 to 31 May , in the Siege of Lille , the remaining Temporary_stay 40,000 men of the once-formidable French First Army fought Hostile_encounter a delaying Change_event_time action against seven German divisions , including three armoured divisions .