In B.C.674 he entered the Delta and scattered the forces of the Ethiopians.

But two more campaigns were needed before the country was thoroughly subdued.

At last, in June B.C.
670, he drove the Egyptian forces before him in fifteen days from the frontier to Memphis, twice defeating them with heavy loss and wounding Taharka himself.

Three days later Memphis opened its gates, and Taharka fled to Egypt, leaving Egypt in the hands of the Assyrian.

It was divided among twenty satraps, most of whom were Egyptians by birth.
Two years, however, were hardly past when it revolted, and while on the march to subdue it Esar-haddon fell ill, and died on the 10th of Marchesvan or October.