Game name: gamename at 4:16pm CST on turn 2 one infantry unit (pink) attacked another infantry unit( red) near a control point on the western side of the map, but the red infantry unit did not return fire. Can we check into why this occurred please?

We'll put up a page on how the game functions internally but here's basically what happened:
all actions in a turn occur sequentially, two things can't happen at the same time (move, shoot, etc.)
Both infantry were executing their last movement on the last timeslice of the turn (without interference & only ever moving over open terrain, infantry happen to execute their last movement on the last timeslice)
Red infantry moved first & check for a target to shoot but was out of range. Pink infantry then moved into range and checked for a target & shot the red infantry. Since this was the last time slice the turn ended.
however:
movement & weapon cool-downs persist across turns so red will shoot first at the start of the next turn. Two units with the same rate of fire will get the same number of shots at each other over time regardless of where the turn boundaries fall

Good to know! We were both wondering what had happened and this makes sense.

Thanks Dag!