It's absolutely safest formation at distance over 80-100 meters, as long as your viewfinder (I mean white circle you aim with) is wider than line you see in it. And if you train enough to reform it swiftly, for example 90 degree to left in less than 3 seconds, no single line has chance to form up faster to open fire. It's very hard work to master it, but we are on way to get this achievement. Tomorrow is day we try it first time on the battlefield
Czechu is probably going to record it, so we will share it here, regardless of results.
Ofc we will never even consider using triple rank during events with light inf/ riflemen present, we are not mad enough ^^