An attack on the German held small island of Kapelsche Veer. It had a harbour on the north side and was simply a segment of low-lying land between the main River Mass and the much narrower Oude Maas.

A German Paratroop Division, had taken up positions on Xmas Eve, and were well dug in at the top of a dyke on both sides of the island. A previous attempt by Polish Forces had been repulsed as was this attempt by the Commandos who suffered many casualties.