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:

K Merry Christmas.
Impeach Obama now.
your an asswipe obammi but the asswipe smells better
Anti-Christ
MERRY CHRISTMAS
God I wish the military would give him another country.
Wow merry Christmas
Moron
beginning to wonder how much of this news is true…. or just trying to get our dander up for a revolt.
Yeah, well I would say it anyway.