Wool is the real deal. You're right, wool uniforms from European armies are good stuff.

Merino wool long underwear is good stuff and doesn't hold the scent the way most synthetics will.

HOWEVER, if you were looking for an odor resistant synthetic, Patagonia's Capilene is the best I've seen, based on personal experience. My dad went for a hike in Jan. 2004. Unfortunately, during the process of caching food, he slipped on some ice, struck his head, and died. His gear cache wasn't found until July 2007, about 3.5 years later. When I opened his bearproof food cannister, inside was some food that smelled so gadawful you could barely stand it, wrapped in clothes, including some Patagonia capilene long johns. Now, usually with a stench like that, any synthetic clothing is a total loss. I washed the capilene long johns, normal cycle, nothing special, air dried them a day or two, and voila they were as good as new, stench gone. My wife wore them last Saturday when we went on our church's annual retreat. I didn't tell her what they were, I just handed them to her. If my picky, persnickety wife wore 'em, then they didn't smell!!!

They however are not to my knowledge melt resistant. I think you'll have to rely on silk and wool for that. Wool would definitely outlast silk.