The New Zealand Division took part in two major actions at Passchendaele, in Belgium, in October 1917. The first, on 4 October, was comparatively successful. However, on 12 October there had been heavy rain. The artillery, shown in the top image, were handicapped by the mud and did not succeed in destroying the German barbed wire. As the New Zealanders moved forward in the mud they encountered undamaged German pillboxes (defensive bunkers), shown in the bottom image, which allowed the defenders to mow down the advancing troops. In all, 843 New Zealand soldiers died in several hours of disastrous fighting.