Aug. 8, 1918, the final Allied offensive was launched in France. It came to be known as the 100 Days, and would result in the collapse of the German army on the Western Front. It began with the battle of Amiens.
It was not a coordinated, planned offensive in the sense that other offensives had been meticulously planned, but rather a general response to what Marshall Ferdinand Foch perceived as weaknesses in the German position and consisted of attacks where it looked like the Germans might be vulnerable.
Meanwhile, the last week or so of July was active, especially with American and French counterattacks against the last German offensive. Why they are not considered part of the final offensive that ended the war, I don’t know.