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:

Merry Christmas everyone
They will on January 21, 2017!!
Merry Christmas dumbassobama I have a present for you come and get it you fuktard
obama’s going to hades … just not soon enough
Does anyone stop to think that these “politically correct” fanatics like Obama, and Hillary are the real bigots. They are the ones engaged in all sorts of cultural cleansing. You can’t get more bigoted than that.
merry christmas
Not somewhere that has a world class golf course. I personally would like to see the Obama clan to retire outside the USA. Both of the Obamas have repeatedly disrespected active duty soldiers and veterans. That fact alone is enough to have them pack their bags one last time in January 2017 and give them one last flight to somewhere. Once they are off the plane, give them a one finger salute and take off. It would also be nice if the Clintons and Pelosi and Sharpton would be their neighbors.
Say CHRISTMAS anyway & take it to general court martial!!!
Been wondering what happened to our military? They, too drank the Muslim kool aid??
This is a Christian nation. Let him try to discipline them. I think there will be a backlash