The map set up I used was:
Desert Mountains #1, oriented north, Classic "Corner" Map oriented south, Desert Mountains #2 oriented north
Desert Sinkhole #1orient south, Desert Hills oriented north, Desert Sinkhole #2 oriented north
By "oriented", I mean which direction the map was laying so the small text with its name and copyright are right side up. I also placed four level 1 hills to break up the edge runs where the maps came together (basically extending existing hills by one hex).
The enemy started on the "corner" map (representing the oasis), while the Emir's forces came in on the southeast corner of Desert Sinkhole #2 with the Double Deuce lance on the southwest corner of Desert Sinkhole #1 after all the Emir's forces entered.