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:

He offends Christians in a heart beat. But sucks up to Muslims. You don’t have to be a rocket scientist to figure that one out.
My god!! Now all doubts even the slightest are taken awY, he has revealed himself totally. Anti Merican muslim, if this doesn’t get him s__t it at least should get him fired!!
The military will take you into custody
You were not a President you are a traitor and an imposter
God help us.
He’s attacking the Freedom of Religion.
Just don’t see how the secret service can guard that piece of c**p in good faith. No wonder they get busted for being drunk all the time.
Disobey the order. It is disciminatory and completely ludicrous. If our military leaders had any respect at all for the soldiers, they would tell Mr obama to stuff it!
So how is he still in office??
Stopped paying attention to him a while back