Try these articles:
http://www.gamasutra.com/features/19990212/sm_01.htm
http://www.gamasutra.com/features/game_design/19990122/movement_01.htm
http://www.gamasutra.com/features/game_design/19990129/implementing_01.htm

Hope they help...

See you!

Have a look at the book Real-Time Strategy Game Programming Using DirectX 6.0 by Mickey Kawick, ISBN 1556226446. You might find it useful.

Or not.

The book is great. I wish I had it when I
first started writing isometric engines.
The only problem is its full of bugzz.
It will take you many months to build
an engine with it.

Oh ya.. The author doesn't reply to
emails anymore.

Ok I want to make a game like the Close Combat series. What Web pages, books, tutorials do you suggest I take a look at? Is any thing that could help me actually building the game? Any help is much appreciated.

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Why should he anymore? He's probably rolling in a bed of dollar
bills by now from people buying his book at $50 bucks a pop.
It's a horrible waste of money. Stay away from this one and get
your info off the Internet instead.

Fabio