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:

this is a lie
not true
Free to say what ever we want. Merry Christmas!!!
Sorry , is that true ?
This is a f**e story
Good fiction piece! Although I think this story should start with “Once upon a time….”
Most people look at christmas as a day of shopping and being off from work I am a christian 24-7 so I care very little about what he says and what the rest of the world look that day to satisfy the greedy money hungry corporate america
Bet I won’t say Merry Christmas!!
God you people are gullible
What is wroung g with this guy you got to be the worstes president ever man what is wrong with your head it is screwed on wroung are you are just plain out of your mine now I know you are missing something you can not love GOD WITH YOUR ATTATUDE YOUR MIND IS NOT WORKING RITE YOU CAN NOT BE RITE IN WHAT YOU DO IF IT WAS NOT FOR CHRISTMAS YOU WOULD NOT BE WHERE YOUR ARE NOW JUST PLAIN CRAZY