Hordes/Battalions with a Banner unit should be retreated when only a few remain to allow the ranked unit to regenerate.
Always close your Castle Gate and build a Postern Gate instead.
Try to grab as many of the economy/outpost plots surrounding your base.
Fewer upgraded units are always better than many non-upgraded units.
Build two economy structures per one unit production building.
Build economy structures in the back of the Camp/Castle and build unit production structures in the front.