Ok, so I have some fond memories of the cold in Germany, Washington State and elsewhere.
I fell in love with the US ARMY GI YUKON STOVE: unfortunately, everyone scooped them up when they were like $70 NEW.
Now, they have doubled in price. Good luck finding a new one. Anyways, they are light weight, a little bulky, but they sure work well.
Almost everything fits inside the stove during transport. One can use solid fuel or diesel. We didn't sleep in tents much, but when we did, my platoon always asked me to fire up the Yukon. There is a reason why.....If you don't take the time to set them up properly, they will fill your tent with diesel fumes. This can easily be remedied, by ensuring to create an updraft in the chimney prior to firing up.
There is one other alternative, its the H45 Space Heater or "pot-belly-stove." They put out over 45,000 btu. Boy do they put out some heat! The only thing is that they were bulky. Perfect for a GP Large or Med. tent. They would fit into a GP small, but they took up more room, and would eventually bake you inside your tent. Just like a 55 gallon fire drum only smaller! They can be had for around $170 new, and that includes the stand for the jerry can: which doubles for heating or holding a water can. They are going up in price, but you can find them for $100 with surface corrosion and they clean up nicely.
The other thing I love is my 4 piece US ARMY GI Modular Sleep System (MSS). When I got to Fort Lewis, they issued me a Cold Weather Bag. It sucked. We didn't use sleeping bags out in the field, (we didn't sleep much, and when we did, it was under a poncho liner. But back in the cantonment area, the cold weather bag was too hot. Like "Goldilocks", it was a problem of being either too hot or too cold. It was frustrating. But back in those days we used to make "patrol" bags by taking an intermediate bag, removing some of the stuffing and then sewing them back up again. What the Army would eventually put into service was the MSS. Its 3 bags in one. with all accoutrements, the MSS will take you down to -30. The great thing about this Sleeping bag is that you can scale it for exactly what you need. You get a real Compression sack to hold it all, a Patrol-bag for the quickies and warm weather; an Intermediate Cold Weather bag, and the "piece de la resistance," a GORETEX BIVY SACK! I got mine for $125 with a brand new Gore-Tex bivy sack and brand new Intermediate Cold bag. The compression sack had one broken buckle, but that was remedied with a new buckle and sewing machine, the Patrol bag was probably used 3 times.
The other thing we used to like were the sleeping bag covers and yah, "body bags." Some people creeped out. But out in the rain and mud, you won't mind. The only thing is that the they don't breathe very much. Perhaps, its because they were designed to hold in "bodily-fluids." The other bummer is that the zipper isn't meant to be opened from inside...go figure. I dunno: sure, they were meant to handle human remains, and they we're a poor mans version of a bivy sack. But back in the day, we had, what we had.
