D-Day 這個名稱的由來

Question

D-Day為什麼要叫這樣的名子，
D應該有特別的涵義嗎??
可以請各位教教我嗎??感恩囉~~~~

Answer 1

the initial D in D–day is not an abbreviation of anything, it is taken from the word day and represents a variableD–Day 的 D 並不是任何一個東西的縮寫 D 只是從 Day這個字拿來的而已然後它代表了一個變數The terms D–Day and H–hour are used for the day and hour on which a combat attack or operation is to be initiatedD–Day和H–Hour 只是個術語被用在決定發動任務或戰鬥攻擊行動的時間和日期D–Day 的 D 沒有什麼特別的涵意它只是美軍的一個術語最早使用這些術語的是第一次世界大戰中的美軍。在日期為1918年9月7日的美國遠征軍第一軍的第9號戰地命令中寫到「第一軍將在D–Day H–Hour發起以迫使St. Mihiel Salient撤退為目的的攻擊。」  

Answer 2

確實聽說過的也是D day, H hour，一場突襲行動的展開，總不能跟敵人講我幾月幾號幾點幾分要攻擊，所以只是用來代表某一時間點的無意義字而已。

Answer 3

The Meaning of the "D"Ever since June 6, 1944, people have been asking what the "D" in "D-Day" means. Does it stand for "decision?" The day that 150,000 Allied soldiers landed on the shores of Normandy was certainly decisive. And with ships, landing craft and planes leaving port by the tens of thousands for a hostile shore, it is no wonder that some would call it "disembarkation" or "departed."根據英文網站找到的資料，有多數人認為D-DAY的D代表決心，也有人認為是登陸上岸