Black Thursday
97 Squadron website
On the night of 16th/17th December 1943, an extremely dense fog caused multiple crashes in Bomber Command, and 97 Squadron suffered its most disastrous night of the war
About The Websites
97 Squadron,
635 Squadron,
RAF Station Bourn of 8 Group,
The Path Finder Force (PFF) led by Air Commodore Donald Bennett,
a central part of the Bomber Command campaigns in WWII using the Lancaster bomber.

This website combines the pages from the Battle of Berlin and Black Thursday (16/17 December 1943) which used to be on the 97 Squadron website. 
The Pathfinders Site is actively linked in, and "WHAT'S NEW" & "Acknowledgments" for all three websites remains on the 97 Squadron Main Menu.

December 16/17 1943 & The Battle of Berlin
Battle of Berlin