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:

Christmas was stolen from the pegans
He is unbelievable! Get rid of him
Pig
MERRY CHRISTMAS and God Bless ALL
This is insane and UN-American !
Merry Christmas to all the troops everywhere now serving or retired! Again, MERRY MERRY MERRY CHRISTMAS!!!!!!
…..and now the facts. Fox News reports: http://www.foxnews.com/opinion/2013/12/24/army-dont-say-christmas.html
Merry Christmas you traitor obama.not.
Sense when is it the place of an American President to dictate to us not to say MERRY CHRISTMAS. WE ARE NOT YOUR PEOPLE MR. DICTATOR BARRY SOETORO. you will be forgot the moment you are out of office. Good riddins. Haji
youre so stupid