Royal Engineers in general have the same repair speed as Sturms but at 5 men while costing much less.
Sturms in general have the same repair speed as RE's while being starter unit that beats all other starter units and oftentimes mainline infantry as well as having barbed wire that annoys light vehicles and isnt part of a manpower starved faction - costing a merely 110mp more (and having the reinforce cost of a much cheaper squad)
Im not sure about release now, but i can confirm that this bug was in effect in Alpha. Somehow the scoped enfields count toward's the squad's ability to drop weapons.
I noticed the first one in a stream, very clearly because the explosion and dust kicked up right under where a StuG III was sitting.
This also happens when using target ground on firefly as well, the projectile seems to either land under or right behind the target tank, so the shells just dont seem to collide with things...