Take it from me, pemmican is the best thing ever, and if you are a hiker, Hunter, or general outdoorsperson, you owe it to yourself to try a few different recipes. (Wrap it extra good in bear country though!)
Fun tidbit of the day: in the Marine Corps our long full pack hikes (~90lbs) were called "humps". In the old days they were death marches.
Mostly just shorter, with better medical care for those injured or falling out. The old death marches I heard used to be ~40 miles, while these days they tend to be ~12 or less depending (big difference between 12 miles on the coast of Pendleton vs 12 miles in the 115 degree mojave desert). Yes, the boot have improved dramatically as well.
Fun tidbit of the day: in the Marine Corps our long full pack hikes (~90lbs) were called "humps". In the old days they were death marches.