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:

I have never heard of this happening.
To hell with that order for that is precisely where it comes from–send it back!
shame on this traitor!
Treason arrest Obama immediately.
Merry Christmas party you
I don’t care what he says. Merry Chirstmas. Mr obam
Screw Obama and his muslim brotherhood. Merry Christmas !!
Remembered that Obama said ” NEW CHANGE WE BELIEVE” then what happen now? Is he mess up with us already?
That would be the best christmas ever if obama would go out of the white house like now
Screw him