Enemy locations beyond LOS

[Flyboy]

Playing a PBEM game with a frequent opponent. On my first turn, I spotted an ammo dump waaaaaaay behind the front lines, well beyond LOS of any of my units (no air secs in this game).

I suppose it's plausible that an advancing force would have some intel on known enemy positions . . . is my being able to fix his ammo dump a reflection of this?

[Mustang]

Did you do any airstrikes on the first turn, or was there any preplanned artillery fire at all? Airplanes might have spotted the dump, and a bug with the artillery fire routine might have uncovered it also. Also, if the ammo dump is located on high ground, it wouldn't be surprising if you could see it all the way across the map.