Deleted member 1487
The 100 days didn't just defeat a tottering German Army, but mid 1918 the Allies had built up a level of tactical mastery more or less equal to the Germans. This tactical mastery allowed the operational and strategic advantages shine through in this offensive.
Tactics were far less important to that victory than the numerical, material, and morale superiority they had over the Germans; anyone could reliably break a point in an enemy line, the Allies just massed enough trucks to be able to extend an advance over 100 days, rather than bogging down logistically after 20-30 as the Germans did. They were also fighting a beaten enemy that had expended their best troops on 5 major offensives, while the US freed up huge reserves for the Allies to attack with; its pretty easy to advance when your enemy is more interested in surrendering than fighting; then its more a question of how deeply you could logistically extend the advance than having to support a major series of offensives to break line after line as the Germans did in 1918.