NOW: Ukraine and Russia are locked in a bloody, frustrating trench war, stalemated for years after the attempt to blitz ...

This required them to pass into the valley of the River Marne across the Paris defences, exposing them to a flank attack and a possible counter-envelopment. On 3 September, Joffre ordered a halt ...

On this day 110 years ago, French and British forces along the Marne River were suffering through arguably the most important battle of World War I – an early clash that saved Paris and broke ...