 Anthoine played an important role in Robert Nivelle's ill-fated campaign in spring 1917.Anthoine was eventually promoted to command French Fourth Army in March 1917 then French First Army in June 1917.At the Third Battle of Ypres in autumn 1917, Anthoine and the First Army participated in the attacks on the northern flank of the salient and guarded the BEF's northern flank from enemy attack across the Yser Canal.