A question of height

[adapted.cat]

Originally Posted by C6_Krasno

In the subtitle "Vector 090 Height 01 (350)", the 01 stands for 100 m, or 0,1 km ; the 350 is the same alt, but in feet.

Okay...that all makes sense.

But that's not the height that the altimeter reads. None of the aircraft are flying at 350 feet. They're flying at 1100 feet. And it can't be a difference between height above sea level and height above ground, either, because the mission in question was partly over sea and partly over land.

In any case, why would a pilot of issue instructions over the radio that don't match up with the instruments used by the aircraft receiving the instruction?

Perhaps I'm coming at this from the wrong perspective. First of all, is this discrepancy something that others have noticed, or is it just me? Perhaps this is just a problem with the steam version of IL2.