I've just noticed this in the news on findmypast:
01 October 2010
Five new military record collections just launched: over 480,000 new records
We have just published five fantastic new military record collections on findmypast.co.uk which comprise 482,879 records.
See the table below for details of each set of records:
Collection Number of
records
WWII Prisoners of War 104,838
Distinguished Conduct Medal Citations 24,928
Ireland's Memorial Records of the Great War 49,602
Register of the Second Anglo-Boer War 259,581
WWI Naval Casualties 43,930
More info at this link:
findmypast news
I think some of these databases may have been available elsewhere already but some look new.