Yeah, that's a good point about the 15mm/6mm thing. Like commisarmoody said, I switched over a while back from 15mm to 6mm, because as the campaign went from border skirmishes to a more proper war, I ended up with battles that were potentially going to have 130 plus vehicles, and battalions of infantry. I couldn't fit that on my table in 15mm, so decided to duplicate everything in 6mm to accommodate the larger battles. My expectation was/is that through attrition the battles would get smaller, and I'd go back to 15mm, or alternate between scales as the size of the battles dictated.
Originally, I expected to be able to switch over in about 4 months, but it took like 14 months to play my first Afrcia game in 6mm, as duplicating my 15mm buildings in the smaller scale took forever. I also got distracted with a huge Cold War hot project during that time.
In any event, the last few ground battles, and the air to air battles have been in 6mm. All of the ground battles through the first 30 or so battles were in 15mm scale.
I've got all of the battles link on a page at (scroll down to the second section for the battle links):
http://irishserb.blogspot.com/p/the-mugabia-uwanda-war.html