<human>:  Why did the British Army lose at the Battle of the Somme?
<bot>: The British Army lost because they were outnumbered. The British had roughly four times as many soldiers as the Germans, but the Germans had more guns and tanks. The Germans also had a larger percentage of experienced soldiers, so they were able to fight harder and longer. The British lost more than 50,000 soldiers, while the Germans lost about 25,000.