After a conference with Hitler and Rundstedt, Kluge issued an order to his Panzer units to halt on 24 May, from Dunkirk—by then the possible escape route for the British Expeditionary Force. The two-day respite allowed the Allies to consolidate their manpower around Dunkirk and prepare for an evacuation. On 5 June, at the commencement of "Fall Rot" ("Case Red"), the second phase of the invasion plan, Kluge's 4th Army helped achieve the first breakthrough at Amiens and reached the Seine River on 10 June. Kluge's command and Rommel's generalship throughout the invasion led to his promotion to "generalfeldmarschall" (field marshal) on 19 July.