Just that it was further mentioned but I end it there.
The passive ability should be called "Brothers at Arms". Something that provides a boost in their performance.
Since Rear Echelons cant do much other than support I think it should do that.
Also, the more Echelons you get, the better the passive ability will become.
Having 2 Rear Echelons alongside infantry or Riflemen, will further enhance reload and rate of fire, but also provides accuracy bonus.
Thus, creates an incentive drive for getting more Echelons.
How is this of an idea?
Sounds like a recipe for more blobbing