Attempt to summarize:
Add new game mechanic „Artillery superiority“ (AS) similar to air superiority.
Add new game mechanic „Artillery superiority“ (AS) similar to air superiority.
- Attacker AS gives small buff to attacker soft attack (and small debuff to defender defense ?)
- Defender AS gives big buff to defender soft attack (and small buff to defender hard attack?) to deorg attacker fast
- No Artillery on both sides, no buffs
- Equal AS when both bring some gives small defender soft attack buff
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