When you play a random campaign, is there any way to rename the units you buy, or are they stuck with the default names?

<r> Time to get new books. I've been playing SPWAW quite a bit recently, and was wondering what's a good book for an overview on Armored Fighting Vehicles and a good book on the military small arms of WWII. <br/>
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Loving the game, just looking for more information on the hardware that I keep ...