 Immediately to the north, the Canadians were supported by XVIII Corps and after an army boundary shift, II Corps of the Second Army.On the northern flank of the offensive, the advance was supported by diversionary attacks by the British XIV Corps and the 1st and 133rd Divisions of the French First Army.To the south, the right flank of the Canadian advance was supported by I Anzac Corps and on the southern flank of the offensive, X Corps supported the operation with a diversionary attack on Gheluvelt, to secure Tower Hamlets ridge, east of the Bassevillebeek.