Kamp was largely rebuilt in the 15th century but suffered extensive damage in the Reformation. The abbey was abandoned early in the Cologne War (1583–1588); many of the monks went to the city of Neuss, where they underwent the siege and bombardment of July 1586; another portion went to Rheinberg, which was the focus of three battles to take the city, the last in 1589. The abbey itself was destroyed by Adolf von Neuenahr in 1586. A small group of monks returned under abbot Polenius (1636–64), but re-construction did not begin until 1683, and the community did not return fully until 1700.