"An Expendable Squadron" The Story of 217 Coastal Command 1939-1945 by Roy C. Nesbit.
A decent overall view of the responsibilities of the said squadron. Did not know Coastal Command was tasked with bombing harbors although it does make sense.
"Guns Against the Reich" Memoirs of an Artillery Officer on the Eastern Front by Petr Mikhin.
Very interesting. Although at times he reads like an "Artillery Super Sleuth" the young officer overcame many challenges. The problems with Stalin's (I'll paraphrase) No Retreat Order and with the NKVD were his worst times.