Just before the evacuation from Dunkirk in May 1940, there were numerous targets identified that shouldn’t fall into German hands. From what I can gather all of the raids to accomplish this came under the heading of Operation XD; many of these exploits were carried out by army units, in particular the Kent Fortress Royal Engineers. I am trying to establish what role was played by the Royal Navy, but have yet to find corroborating evidence, which is a shame as my father took part in this campaign. He was Lieutenant CRG Wilkinson at that time, and his Commanding Officer was Commander M Goodenough; they must have achieved something as both Goodenough and a Lieutenant Madden were awarded medals; the DSO and the DSC respectively. All I can find is that their target was at Ijmuiden in Holland, but no more. Does anybody have any more information on this subject?