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:

It’s all BS. Check in its new people this is a false website
Merry Christmas everyone!
Demon
Not sure I believe this, too outrageous, even for Him.
If this is correct, it should not stand. . Outrageous.
We do not have freedom anymore Vote Donald Trump 2016
Good luck enforcing that
Obummer needs to move to Syria where would be at home with his Muslim brothers and take America hating Michelle with him
please get the hell OUT of office we need a real supporter of america in that office it sure the hell is NOT you
Yeah, right. He’s a Christian. NOT