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:

Merry Christ-moose!
Fu== bam bam and the$#%&!@*he rode in on.
if i was in the military you woldnot stop me from saying MARRY CHISTMAS becous CRIST is nom 1 in my book
BS!
religion has no place in the military
Whatever happened to Freedom of Speech? And Freedom of Religion? Didn’t he swear an oath to protect those rights? Twice, if I remember rightly.
who cares what that muzzie has to say
Merry Christmas!
To hell b with that. I venture our military is no longer run by the president, any patriot would necessarily not follow Hussein Obama’s orders.
Screw him, say it people. What’s he gonna do, arrest you. Ha, wouldn’t dare.