It is not easy, we feel your pain and pray for your loved one. ^i^
Luckily, our son is not in the war, but we share in your seperation and loneliness. When ours first joined the Army 10 yrs ago it was quite an adjustment, specially some holidays when he could not be home with our family. When he was away for special training or missions ~ thinking about what he was going through was very depressing. I almost made myself sick with worry and then one day I remember what he once told me - he is doing what he loves, why worry? Easier said than done!
For us - it helps to have placed it in God's hands and say special prayers daily. We have no doubt his guardian angel is protecting him and we are united in spirt. We do whatever it takes to get thru the seperation one day at a time - place his pictures around, keep a candle burning in his window, have bows on trees outside, decorated our Christmas tree in red, white, blue, etc.
As of lately we have are very fortunate. He bought us a webcam before leaving the country and we are able to talk/see him via cam. Christmas Eve, which is also his BD, we all got to sing HB to him via webcam. It was wonderful!!!
If you do a search, there are many military sites for families to console and share stories that may help.
Take care and keep the faith ^i^
~ Sandie