After the capture of the city,you realize that it is not the 'city of gold'and march deeper into the interior and come across a small temple complex,now this does have some gold,but in order to 'accquire' it you must seige the heavily guarded temple.
Your objective
you have very few men at your disposal so use them wisely,your lord will have to get his hands dirty!.If you are left with ten or less troops use your lord in the last assault.
Secondly,ignore the blue troops,they are just for effect.