At the beginning of the battle the French were unaware that the Germans had numerical superiority because only units of the German 2nd Army attacked. Fossard regarded the attackers as skirmishers and therefore did not request reinforcements. By the time he realized the strength of the force he was opposing, it was too late. Seriously flawed communications between Frossard and the Bazaine's headquarters slowed responses: by the time the reserves received orders to move to Spicheren German troops from the 1st and 2nd Armies had moved across the open ground to shelter at the base of the heights, arriving at one o'clock.