As you may rember, my Black Gate map had no invasions, only patroling troops that eventually attacked you. This was because I reall had no idea how to program invasions. Cue test map creation. These maps were created so i could find the best invading army for an invasion. I also attempted to imatate subajussa's edge-of-the-grass-look and rock on the hills (im sure these teqnucues are not unique to him, but I used his maps as a guide). Four maps later, I had created the contence of my Defence map pack: (in order of creation) The Defence (top left), Triangle (top right), Motte and Bailey (bottom left, and The Lion Defence (bottom right).
The stories of the maps are in the maps themselvs.
Sorry about the low minimap quality. I had to shrink the pixle deminsions.