The Tenth Army’s counterstroke (also termed the battle of Soissons), spearheaded by XX Corps (the Moroccan Division with the 1st and 2nd US divisions),achieved the desired tactical surprise and penetrated about four miles on 18 July. However, this gain was about half that expected despite the heavy air and artillery support, and the impressive employment of tanks. Furthermore, at the end of the first day Petain denied Mangin the additional forces required for immediate exploitation, thereby negating an important condition for success enunciated in Directive No. 5.
Under pressure on both their flanks, the Germans reorganized their defences in depth over the next few days and so prevented the link-up of French forces at Fere-en-Tardenois.

第十集团军的反击（也被称为苏瓦松战役）由第20军（摩洛哥师以及美国第1、第2师）担任先锋，于7月18日达成了预期的战术突然性，推进了约4英里。然而，尽管有强大的空中和炮火支援，以及坦克的出色运用，这一推进距离仅为预期的一半左右。此外，在第一天结束时，贝当拒绝向芒让提供立即扩大战果所需的额外兵力，这违背了第5号指令中阐明的成功的一个重要条件。
由于两翼受到压力，德军在接下来的几天里重组了纵深防御，从而阻止了法军在费尔昂塔德努瓦实现会师。
（贝当又又萎了）