Interloper problem

[LusitanianWolf]

He means by single clicking on the enemy with your cavalry rather than double clicking. This means they walk to the enemy, then charge when at the right distance. Try it out, it actually yields better results than double clicking so that the cavalry run to the enemy and then charge.

Ah, ok, thanks, didnt knew about that!
Damn, to think that after 7 years (?!?) of playing RTW I still don't know all the tricks on the engine