I was with 4Para in Pudsey for a while. We used to Tab (Tactical advance to battle) (Run and speed march) at Catterick with 50lb which is not what deployed troops carry (up to 80lbs) they ran 16 miles THEN fought on front lines.
Even with 50lb it is hard to stand up let alone run, the heavy physics in this game are refreshing, no cod noobs running around, please keep the weight aspect in the mod.