"Dec. 16, (15.17 hours) - Batt. SS 500, Hellendoorn, Site 400 (Eelerberg - first period), V-2 rocket fired, impacted the crowded Rex Cinema in Antwerp, in the Keyserlei, resulting in 567 casualties to soldiers and civilians, 291 injured and 11 houses were destroyed. 296 of the dead & 194 of the injured were U.S., British, & Canadian soldiers. (This was the single highest death total from one rocket attack during the war in Europe.) "
From reading through this article I would think there should be English records of the survivors that were taken to a British Hospital .
http://www.v2rocket.com/start/chapters/antwerp.htmlHow about sending an email to request if the British archives hold any information about the British military hospital in Duffle, Belgium where some of the survivors went.
http://www.nationalarchives.gov.uk/hospitalrecords/What information are you after? A list of names or your own soldiers data? Information should be on his personal military file.
Some of the men that died were from the Royal Air Force Volunteer Reserve 2757 Sqdn. R.A.F. Regt.