How come they give guardsmen (well, Cadians) just a flak jacket? Give them a few 'flak pads', like knee pads, elbow and forearm protectors!
Imagine: an Ork Slugga round races towards you and hits your knee at a slight angle. Of course, your knee gets blown off. But what if you'd worn a flak pad? The bullet will have probably bounced off your knee and you'd be able to merrily fight on!
Imagine: an Ork Slugga round races towards you and hits your knee at a slight angle. Of course, your knee gets blown off. But what if you'd worn a flak pad? The bullet will have probably bounced off your knee and you'd be able to merrily fight on!