Who has Fired/Who has Not/Concealment Question

[Compass Rose]

I am sure I will be corrected if I am wrong however, I believe the game is set up on purpose so you can't know if a unit is concealed or seen by the enemy.

In the PzC series, if you would see the binoculars, that would indicate that enemy units can see your unit.

In the PzB series, if you see the binoculars, that indicates that you can see an enemy unit however, you have no clue if they can see you back.