{"id":624701,"date":"2026-01-18T22:41:44","date_gmt":"2026-01-18T21:41:44","guid":{"rendered":"https:\/\/cronologia-universale.it\/april-15-1951\/"},"modified":"2026-01-18T22:41:44","modified_gmt":"2026-01-18T21:41:44","slug":"september-1945-2","status":"publish","type":"post","link":"https:\/\/cronologia-universale.it\/en\/september-1945-2\/","title":{"rendered":"September 1945"},"content":{"rendered":"

As part of the US Congressional inquiry into the Japanese attack on Pearl Harbor, much classified and secret military material was made public, including the interceptions and decryption of Japanese messages encrypted with JN-25. The British side of the story, namely the work done at Bletchley Park against Enigma and Japanese codes, remained secret for decades: until 1974, when some aspects were revealed, while others only came to light in the 1990s or even the following decade.<\/p>\n","protected":false},"excerpt":{"rendered":"

As part of the US Congressional inquiry into the Japanese attack on Pearl Harbor, much…<\/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":[37],"tags":[],"class_list":["post-624701","post","type-post","status-publish","format-standard","hentry","category-fq-en"],"acf":[],"yoast_head":"\nSeptember 1945 - 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\/september-1945-2\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"September 1945 - Cronologia Universale\" \/>\n<meta property=\"og:description\" content=\"As part of the US Congressional inquiry into the Japanese attack on Pearl Harbor, much...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cronologia-universale.it\/en\/september-1945-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Cronologia Universale\" \/>\n<meta property=\"article:published_time\" content=\"2026-01-18T21:41:44+00:00\" \/>\n<meta name=\"author\" content=\"Rick\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Rick\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/cronologia-universale.it\/en\/september-1945-2\/\",\"url\":\"https:\/\/cronologia-universale.it\/en\/september-1945-2\/\",\"name\":\"September 1945 - 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