The Hindenburg Line disappears as tanks arrive, signaling a shift from static trenches to mobile war.

Amiens debuts a new, coordinated assault with tanks and rolling artillery changing the war’s tempo.

A linked series of Allied blows breaks the German front from Amiens to the Meuse-Argonne.

Combined arms, precise artillery, aircraft reconnaissance, and agile infantry redefine offense.

German morale and politics crumble as shortages, mutinies, and revolution pressures rise.

Offensives wind down with armistice, Versailles leverage, and a changing view of modern war.