15 Then the king of the North will come and build up siege ramps and will capture a fortified city. The forces of the South will be powerless to resist; even their best troops will not have the strength to stand.

Read Daniel 11:15 Using Other Translations

So the king of the north shall come, and cast up a mount, and take the most fenced cities: and the arms of the south shall not withstand, neither his chosen people, neither shall there be any strength to withstand.
Then the king of the north shall come and throw up siegeworks and take a well-fortified city. And the forces of the south shall not stand, or even his best troops, for there shall be no strength to stand.
Then the king of the north will come and lay siege to a fortified city and capture it. The best troops of the south will not be able to stand in the face of the onslaught.