Great Britain (Br 1st Army, 87,000 men under Gen Haig) attacked Germany (Ger 6th Army(-), 40,000 men under Cr Pr Rupprecht) in France. The CAA Database of Battles records 18.2 hours of fighting on a front of 3.6 km, a frontal attack against fortified defense, and that Germany held. Losses: Great Britain 12,892 (15%), Germany 12,000 (30%).
This plan is generated from those figures. It shows the shape of the battle the database describes: the size and width of the armies, the plan of attack and the outcome. It does not show where the units actually stood.