Thanks for bringing this to our notice. Maybe others may already know of it, maybe it has been mentioned on Rootschat, but this was the first I knew of it.
Have done some 'digging' and the most I can find is:
1. Dunkirk - 20th October
2. Titanic - 27th October
3. Battle of Britain - 3rd. November
4. D Day - 10th November
5. Mutiny on the Bounty - 17th November
the other 5 episodes relate to Jack the Ripper, The Battle of the Somme, The Tay Bridge Disaster, A Victorian Royal Scandal and Emily Davison (suffragette who threw herself under the King's horse) but can't find out the dates each one is shown.
Annette