The first major offensive of the great war took place when germany invaded belgium on its way to france. in what battle were the germans halted, creating a stalemate?

It would be at the First Battle of the Marne in the First World War that is also known as the Miracle of the Marne which results as an Allied victory and halted the German advance to conquer France and resulted to a trench warfare that would last for years. It is also a major turning point in the war because before the victory the Allied Forces we're in full retreat into Paris but after that battle it ensues a victory and a hope for Allied victory even though it would dragged for years.