the helmets has be donne to increse the thoughnest agaist bombs, it will decrease the time a bomb will supress your soldiers,
still, later, BUT very later in campaign, we can get boby armors that HAS EXISTED in WWII, in fact they where not efective. but since they got alot of SMG roling around, it actualy protected agaist low calibrer bullets, germans used to give to STG44 SS soldiers. to ensure those tough guys being a bitter tough.
one bronze card will buy one helmet, meybe 35 percent of supresion from granades maybe? and the boby armor must give limited amounght of protection, maybe 25 increse of vitality? 3 bronze cards will bought this protections will be nice though.
i know some soldiers wear it, and some not. but let,s make it no longuer a skin, but actualy a equipment. that have stats.