I'm thinking of building an ancient period army for wargaming use under the DBA rules in the future. Figs used will be 1/72s of course. It seems to me that all DBA armies' basing sizes are "modulized" and say, the base for 4 blade men is 40mm x 15mm, and 40mm x 30mm for a 3-knights base, in 15mm scale. However, I've no idea what the standard sizes (if there is any) should be for gaming in 1/72. After having a look into the rules I got the impression that the width of bases counts in the game. So I think I'd better make this point clear before getting into the work.
PS: since I'm totally new to wargaming, it'd be of great help if someone could put up their finished DBA armies here. This will surely provide me with lots of inspirations.
Thanks a lot in advance for your help!

cheers, chen