Enemy infiltrators between opertion battles

[Maakt Droog]

Thanks for the responses guys. I can offer some additional info to address points that have been raised.

Coil, the sniper appeared eliminated in the set up phase (I noticed before we got to the orders phase for turn 1). He was lying "dead" in the midst of my other arriving reinforcements. I also checked the date at the start of the op and the current date: they are the same, April 16, 1945. Interesting theory, tho'.

Bluehand, my original sniper is still on the board, stalking my foe's tanks at this very moment. The eliminated sniper would have been a second sniper. Perhaps that's the reason? I'm only allowed one sniper; is that even a possible scenario set up? Also, I do not have any guns; just tanks and infantry (with some weapon teams, mgs and spotters).