What would I pick to recreate the Aden Emergency

[DRG]

This depends on what battle in that region are you referring to. The Jebel Akhdar War 1954- 1959, the Aden Emergency 1964–1967 or the Dhofar Rebellion 1962 – 1975 but basically there has been non stop warfare that area since the 50's though not always involving the British.

If you keep your force to mainly infantry and have preferences set to AI Tank Heavy OFF you shouldn't see a Yemeni armour overload and less so if the battle you want to recreate is in the late '60's and you can use South Yemen as the opponent