On the first day the British Army had 57,470 casualties, of whom 19,240 were killed. The French Army had 1,590 casualties and the German Army lost 10,000–12,000 men. The Allies planned to attack together, but the French were busy with the Battle of Verdun, so the main attackers were British. The cost of the battle, and the small gains, have been a source of grief and controversy in Britain. In German and French writing, the first day of the Battle of the Somme has been little more than a footnote to the mass losses of 1914–1915 and the Battle of Verdun.