the German where dominating the french in Vur Dun so field Marshall Douglas Haig made a plan.The plan was to create another battle near Vur Dun to help the french army to get a fighting chance.He did this by taking British men and starting a battle at the Somme
douglais haig decided he would bomb the german trenches for 10 days straight with almost 12 million shells by the end of the bombing he did this in hopes to kill all the enemy soldier destroy there defences and destroy they barbed wire.
he also had his british sappers to dig to hawthorne ridge and place some mines there. this was where gereman machine guns were located by blowing there machine guns up haig thought it would've have been an easy victory. because almost all the soldiers wouldve been dead by the time the bombing was over and the machineguns were destroyed.