Which lasted longer, the Second Battle of the Marne or the Battle of Belleau Wood?
Second Battle of the Marne The Second Battle of the Marne (French: "Seconde Bataille de la Marne" ), or "Battle of Reims" (15 July – 6 August 1918) was the last major German offensive on the Western Front during the First World War. The attack failed when an Allied counterattack by French and American forces, including several hundred tanks, overwhelmed the Germans on their right flank, inflicting severe casualties. The German defeat marked the start of the relentless Allied advance which culminated in the Armistice with Germany about 100 days later.
Battle of the Ancre Heights The Battle of the Ancre Heights (1 October – 11 November 1916), is the name given to the continuation of British attacks after the Battle of Thiepval Ridge from 26–28 September during the Battle of the Somme. The battle was conducted by the Reserve Army (renamed Fifth Army on 29 October) from Courcelette near the Albert–Bapaume road, west to Thiepval on Bazentin Ridge. British possession of the heights would deprive the German 1st Army of observation towards Albert to the south-west and give the British observation north over the Ancre valley to the German positions around Beaumont Hamel, Serre and Beaucourt. The Reserve Army conducted large attacks on 1, 8, 21, 25 October and from 10–11 November.