1. THE BATTLE OF THE SOMME LASTED NEARLY FIVE MONTHS
The Battle of the Somme was one of the most bitterly contested and costly battles of the First World War, lasting nearly five months. Despite this, it is often the first day of the battle that is most remembered. The offensive began on 1 July 1916 after a week-long artillery bombardment of the German lines. Advancing British troops found that the German defences had not been destroyed as expected and many units suffered very high casualties with little progress. The Somme became an attritional or 'wearing-out' battle. On 15 September, tanks were used for the first time with some success, but they did not bring a breakthrough any closer. Operations on the River Ancre continued with some gains, but in deteriorating weather conditions major operations on the Somme ended on 18 November. Over the course of the battle, British forces took a strip of territory 6 miles (10km) deep by 20 miles (32km) long.