I would think not, because the term H-Hour was also used.
http://www.britannica.com/dday
T - This is another O - Opportunity to D - Do A - A work, better than Y - Yesterday
For Skirmish Dday you have to call. I assume it is the same for Oklahoma and other big dday games also.
how many tanks were there durind dday
d/t ...or... dntn
the abbreviation for diameter is simply just: d
The common abbreviation for the word "discovery" is "disc." However, in specific contexts, such as legal or scientific discussions, it may also be abbreviated as "D."
The abbreviation of de is d' usually used in French, Italian or Spanish when the next word begins with a vowel.
About 3000 people died on Dday.
another word for NEEDED starting with a D is dependable.
D-Day was the Allied invasion of German occupied France, on the beaches of Normandy on 6 june,1944.
The internet abbreviation is: .de The abbreviation for vehicles is: D