Cannon Fodder is a great inspiration, I made a RTS inspired by it too, your's looks a lot more authentic though, Nice looking editor. I still have plans for my little soldiers, got this idea for a WWII RTS like Cannon Fodder and Commando's mixed together.
Unfortunately that version is for the Sega MegaDrive, I always liked the ST version best, I suggest finding it for that instead and using STeem or WinSTon, that way you can use the mouse.
Mega-Lo-Mania was great too, same sorta style but more like a simplified C&C, well worth checking out too.