ahhh worst part is when you land your troops they all quit fast they should wait till end .
i notice 1 thing those who tech for whole game are very weak on defense
bad production they depend on gold and advanced units are very expensive if you dont have good economy you dead .
the best midle game rush is navigation (strong navy ) few catapult few pike armies and some knights + fundamentalism .
in this german strategy (wich i invented

you get barracks then get as many warrior elite units before iron working and dont make army with them until you get iron working. once you get iron working start building legions (same price as warriors )and then make armies 1 elite 2 veterans

.
and for whole game must keep reasrching or you will be way behind as i was .
this strategy work only if you are safe on small continent /island.