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:

Amen! Agreed!
This is the product of the people who voted for him.Wake up America…Trump 2016!
Merry Christmas to all. This order I would be very happy to disobey. Between God and the Magistrate, Paul has answered who should be chosen. The confession of Magdeburg, wich inspired the Independence declaration of the USA, was written with the same core, to obey God and the Bible, not the Prince or the Pope.
Wth!?
MERRY CHRISTMAS
somebody needs to take “his” pens away from this idiot
Merry Christmas to all and God bless this country.
Hey obama . . .
To Hell with him..
GO AHEAD SAY MERRY CHRISTMAS IF YOU CHOOSE..
NOT FOR HIM TO SAY
Just impeach and remove this guy from office today.