^ These answers I've given above should be pertinent!
Suffice to say that NO ONE walked into waves of machine gun fire in 1914, or it would seem at any point of the war. Poorly trained soldiers would naturally bunch together, and poor reconnaissance would lead a unit in marching order to be fired upon by the enemy (Both befell the French in August 1914). Moreover, having read the accounts of soldiers (particularly German soldiers) from the Somme, 3rd Ypres and other campaigns, most tend not to be very descriptive in their depictions of enemy tactics, with the enemy coming on in 'hordes' and 'waves.'
The Germans certainly launched their fair share of futile infantry attacks, in particular at 1st Ypres, the Somme and Spring Offensives of 1918, but they did not walk into machine gun fire.