Yes Reg, but who says that the battle took place only on one imagined level/plain?
Up and down depend on the ship, youre flying and the horizont it uses to dermine its position in relation to the flight direction and positions/movements of other objects to itself.
If I say altitude, I used this word to simplify the question and want to know if enemies can approach or fly away in more directions, than being glued to one level/plain like X-Wing.
Talking about conditions an parameters in space battles in English is no easy.
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