These rules derive from the combined concepts put forward in the rules sets "De Bellis Antiquitatis" and "Chef de Battalion". It was envisioned that a player is likely to control a single Battalion within these rules (a battalion having 15 bases or more).
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http://replay.waybackmachine.org/20080828102549/http://www.bookranger.co.uk/Wargames/NapDBA.htm