And its history. Written during the second battle of Ypres, first use of poison gas (by German army).
The best geographic account is a series of 15 minute videos on each year of the war., especially 1914, 1917, 1918 and the Battle of the Somme. The series admirably also focuses on war in Africa, Asia, and the Middle East, areas neglected in Eurocentric accounts.
Tanks proved decisive in breaking the stalemated trench warfare on the Western Front. Renault designed the French tanks which were highly effective. (Steven J Zaloga, French Tanks of World War I)
Aerial reconnaissance gave way to aerial combat over the course of the war.
Flanders showing some areas from the First World War.
View Western Front “Where Poppies Grow” in a larger map