{"id":624338,"date":"2026-01-18T22:29:38","date_gmt":"2026-01-18T21:29:38","guid":{"rendered":"https:\/\/cronologia-universale.it\/late-1945-2\/"},"modified":"2026-01-18T22:29:39","modified_gmt":"2026-01-18T21:29:39","slug":"june-1944","status":"publish","type":"post","link":"https:\/\/cronologia-universale.it\/en\/june-1944\/","title":{"rendered":"June 1944"},"content":{"rendered":"<p>Signal Intelligence: The Kriegsmarine begins distributing special decryption algorithms (Sonderschlussel) for each individual U-Boat. They will not actually be applied in the field until mid-November 1944. If applied correctly, they are very difficult to crack, especially if cribs are scarce. It will take 5,300 bomb hours to drop one, the Sonderschlussel, in April 1945. Only three Sonderschlussels will be cracked, and all three by the US Navy&#8217;s OP-20-G.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Signal Intelligence: The Kriegsmarine begins distributing special decryption algorithms (Sonderschlussel) for each individual U-Boat. They&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[29],"tags":[],"class_list":["post-624338","post","type-post","status-publish","format-standard","hentry","category-as-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>June 1944 - Cronologia Universale<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cronologia-universale.it\/en\/june-1944\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"June 1944 - Cronologia Universale\" \/>\n<meta property=\"og:description\" content=\"Signal Intelligence: The Kriegsmarine begins distributing special decryption algorithms (Sonderschlussel) for each individual U-Boat. 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