[{"id":3191430,"description":"The term D-Day was a shorthand expression first used in World War I to denote the date an operation was to be launched. In the earlier war, officers also used H-HOUR and M-MINUTE, but these were seldom used in World War II. Because of the scope of the 1944 operation and the momentous stakes, in common parlance, “D-Day” has come to refer primarily to the landings in","source":"NSA News","pubDate":"Thu, 01 Oct 2026 14:35:44 +0200","url":"https://www.nsa.gov/Press-Room/News-Highlights/Article/Article/3790238/history-today-june-6-the-role-of-signals-intelligence-or-ultra-on-d-day/","titre":"History Today, June 6: The role of signals intelligence or 'ULTRA' on D-Day"},{"source":"NSA News","id":2804246,"description":"The term D-Day was a shorthand expression first used in World War I to denote the date an operation was to be launched. In the earlier war, officers also used H-HOUR and M-MINUTE, but these were seldom used in World War II. Because of the scope of the 1944 operation and the momentous stakes, in common parlance, “D-Day” has come to refer primarily to the landings in","pubDate":"Fri, 03 Apr 2026 16:30:07 +0200","url":"http://www.nsa.gov/Press-Room/News-Highlights/Article/Article/3790238/history-today-june-6-the-role-of-signals-intelligence-or-ultra-on-d-day/","titre":"History Today, June 6: The role of signals intelligence or 'ULTRA' on D-Day"}]