In cold weather tent camping can be a bit uncomfortable. You can be cold as well as being damp from condensation. If you become too damp you can develop hypothermia.
There is a little trick I use that helps to keep me both warm and dry if I use a tent while camping in cold weather. This can be a bit dangerous if you fail to use good judgment but these two tips could even prevent frost bite. If you are using an open bivouac style tent you can place a candle or 2 at the enterence of the tent and lite them.
The seemingly small amount of heat put of by this little flame can actually prevent frost bite from occurring on your toes and feet. If you are in a more normal enclosed type of tent place a couple of tea lights in a small cooler and place it near the door as well. Just 5 or 6 of these little long burning suckers are able to keep a 9'X12' tent that is large enough to sleep 9 people considerably warmer than the outside ambient temperature.It is like having a fireplace in your tent, But be certain to use good judgment.
Or you risk burning down your tent.
One way of helping to keep warm is making sure that the sleeping bag you have is suitable for the cold weather. You can purchase sleeping bags now that are suitable for sub-minus conditions. If you have one of these then thermal underwear underneath your pj's and then 1 or 2 nice fleece blankets over the top of your sleeping bag should help.
All else fails take a heater you can get some that are suitable for tents and heat your tent up really quick (although not sure how long they last).
I agree with the other commenters - a good sleeping bag that is the right size for you is important. If it is too big, you will have cold pockets of air. I personally think it is not an item to save money on.
Buy the best quality you can, with a warmth rating to suit the conditions in which you plan to camp. Wear a beanie or do up your bag over your head. Make sure you lie on an insulating mattress.
Self inflating mats like Thermarest are great as they do not allow the cold from the ground to seep through. Use a silk inner sheet inside your bag - that will boost your bag by a rating. If you are sleeping in a large tent on your own, you will not generate enough heat to warm it.
However, if in a smaller tent (eg a hiking size), the closer walls etc enable the space to warm up more quickly. Thermals are great too. I only need those if close to snowing temperature though.
Wear big cosey pjs, with a night cloak too :D then a blanket on top. (and bring a big snuggly teddy too, for extra :P).
One time a friend of mine actually experienced hypothermia at our camp site. The first thing we did was cover him up with space blankets. Coleman has a particular foil-like sheet that could double as a good insulator.
Try that one out.
I agree with all the points We also place a travelling rug on top of the air bed under the sleeping bags. Our bags can be zipped together so we can share it. Make sure you buy a left hand zip and a right hand zip to do this.
I also sleep just wearing boxers, that way your own body heat warms up the stuffing in the bag which keeps us as snug as two bugs in a rug. Buy a mummy sleeping bag that will cover your head.
A lot of it depends on the quality of your sleeping bag. Many show to what degree (temperature) they will keep your body warm. Frequent campers that I know where only long underwear or less while in the sleeping bag, because the less clothes you wear, the better.
Sleeping bags stay warm by radiating the heat from your own body around the bagfishtiger58 has a great hub about this topic: hubpages.com/hub/Buy-A-Good-Sleeping-Bag.
Annaroo has good advice. I am surprised, a little, if you have camped for years, if you haven't already considered some of these things. Regardless, I like to see what advice was offered a hundred years ago - since they dealt with such conditions more often than we do.
Here is the advice I found - and have used. Go a little farther than Annaroo says - you should take off ALL of your clothing when in your sleeping bag. Your clothing should, however, stay in the bag with you.
That way the clothing is comfortably warm in the morning when you put it back on. Your bag should be a quality bag - rated for the temps you are expecting, plus a little. The candle in the tent idea is interesting, and I am sure quite effective, but like that poster said, also dangerous.
The air in the tent in the morning will be cold. That's camping. If you leave your clothes off, but in the bag, when you put them on you will find yourself much better equipped to handle the cold morning air.
Your choice of a camping spot can have a lot of impact on the morning temp. You can pick the wrong spot - and it may be 10 or even 15 degrees colder than a spot 15 yards away. It may also be damper - from dew, and as Sterling said, dampness can lead to problems.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.