After defeating the Germans at Amiens, the Allies need to find a way to smash through the Hindenburg Line.

After defeating the Germans at Amiens, the Allies need to find a way to smash through the Hindenburg Line.

This episode examines the lead up to the 'combined arms' coordination of artillery, tanks, aircraft and infantry.

This episode examines the lead up to the 'combined arms' coordination of artillery, tanks, aircraft and infantry.