aircraft disappearing against terrain.

[seiseki]

Yeah, it's really hard..

I even lose track of large bombers in formation..
One wrong turn, I look back and wait.. where did everyone go?

But for me it's most likely the unstable framerate which plays a big part too..

I read these war stories and it seems like spotting planes is really easy in real life..
Why is it much harder in games? A lack of depth perception? Low resolution?