Oh, I'm so glad I never had to do military service. I'm crazy about hillwalking, and many army veterans also enjoy this, possibly because they're used to long walks and fitness training. However if I'm doing a low-level walk of any length, I always take lighter boots or walking shoes, because I've experienced the pain and blisters of long walks in heavy boots. Heavy boots are great for going up steep hills, but an absolute nightmare on flatter ground.