Persian immortals unable to melee

[Danspartan]

Was playing as persia and was trying to take city with immortals and noticed they were not melee attacking. There for unable to capture a city once its defenses/garrison where gone.

 

[Browd]

Immortals appear to be treated as a ranged unit for combat purposes (so they cannot capture a city, just as archers and catapults cannot) but a melee unit for promotion and upgrade purposes. This has been discussed at some length in this thread: https://forums.civfanatics.com/threads/immortal-not-a-melee-unit.613226/