The Obama administration has directed the military to not allow personnel to say “Christmas”, in spite of the holiday’s status as a federally-recognized holiday.
The reason given by armed forces officials is that not everyone celebrates Christmas and that out of respect for them, military members should refer to Christmas celebrations simply as “holiday”-themed festivities.
This prohibition comes in the context of a wider push for political correctness in society in general and the military in particular, as evidenced by the recent reprimanding of Navy Chaplain Wes Modder for simply discussing religion, as chaplains are wont to do, with military personnel.
See how servicemen have reacted to not being allowed to say Christmas at the link below:

Ill tell the p**s ant straight to his face “go to hell buddy boy”
@$(:)$&): Obama!!!!!!!!!!!
Happy Ramadan. …YOU P.O.S. President. .
Merry Christmas to the Miltiary.
Get a limit set on Executive Orders per Year to stop this traitor.
It’s a little early but Merry Christmas everyone !!!
People in my opinion you are looking at Americas worst possible enemy since Adolph$#%&!@*.. The heathen little SOB will never stop me from saying what is on my 100% pure American Heart.. So let me be the first to wish each of you a very MERRY CHRISTMAS, a Obama free New Year, and may GOD BLESS AMERICA AND HER PEOPLE…
Happy Thanksgiving and Merry Christmas this is how it is done in America.
God help the USA
http://www.breitbart.com/london/2015/11/15/300000-britons-demand-close-uk-borders-now/