 As its name implies, it is aimed primarily at simulating large battles.The rules allow armies to be chosen from published Army Lists (in 4 books, with about 250 different army lists in total - but many more once all the in-list variants are taken into account) using a points system to select roughly equal armies if required.DBM was written by the UK based Wargames Research Group (WRG) team of Phil Barker, Richard Bodley Scott and Sue Laflin Barker.