Discovered the best socks in the world for a ruck march ...
Wigwam's Hot Weather BDU Boot sock is my current favorite. I've done a number of 12 milers with heavier loads (60 lbs dry) and only had a couple tiny blisters at the tips of my 2nd toes. I prefer them over Fox Rivers and UA's Hot weather boot sock for rucking. I've always just used the US issue green boot socks.