Interesting articles

Here are some recent articles that I found interesting:

Breaking “Tirpitz”: Cryptanalysis of the Japanese-German joint naval cipher

States by secrecy: Cryptography and guerrillas in the Spanish Civil War

‘Damned Good Amateurs’: Yugoslav Partisans in the Belgrade Operation 1944

The Evaluation of the Military Qualities of the Red Army in 1941–1945 by German Memoirs and Analytic Materials