Objective: Elimination. There's 8 enemies on the map.
Turn Limit: 5
Recommended Echelon(s): AR/SMG (x2)
Provided you use two echelons, this a quick sweep of a map. None of the enemies move, so having two echelons allows you to sweep two of the rows quite easily. You have enough turns to then clear the third row of whatever's left.
Video of me clearing this map