Bombs and bayonets in the foreground: an attack at dawn on the British front. The bombers equipped with bayonets used rocket-shaped bombs on this occasion, which were transported in panniers or canvas bags. The attached webbing ensured that the bombs fell upside down and exploded. The larger explosions on the left were caused by hairbrush bombs, so called because of their shape, Historic, digitally restored reproduction from a 19th century original, Record date not stated