How many British soldiers died on the first day?
60,000
How many British soldiers died over the course of the whole battle?
420,000
How many deaths were there altogether?
About 1,300,000
What was introduced in this battle?
Tanks
Where is the River Somme?
Northern France
How many days was the Battle of the Somme?
141 - 1st July 1916 to 18 November 1918.