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:

Since when does an executive order trump a Constitutional Amendment? Actually part of the Bill Of Rights… An Inalienable right!!!
Merry CHRISTmas, everyone! And I will not recognize any muslim during the month od December, either. Take your EOs and put them where the sun will never shine. God bless and keep our military safe.
pos musliem
This is Republicans’ way of Loving the American people……
Awful!!!
Freedom of speach. If idiots can burn our flag Our Military can say What they want. Take that trash out already.
What’s wrong with our leaders???
This guy really dose think he’s an emperor, delusional sickness that’s dangerous I don’t think he ever wants to leave the Whitehouse something sinister is afoot, stay diligent.
Well Mr. Fraud, Anti-American, Islamic Marxist, POS ! I am American and I will uphold All the freedoms in My Constitution !
F””k you Obama