The Battle of the Somme took place from July 1 to November 18, 1916 along the Somme River in France. It began as a British-led offensive aimed at weakening Germany's military power but later shifted to relieving pressure from Germany. On the first day alone, over 58,000 soldiers were killed, including one-third of the British forces engaged. Tanks were used in battle for the first time during the Somme, which saw heavy casualties over its duration as forces fought over trenches in no man's land.