  So-called battle maps are an appropriate way to visually summarize the flow
of battles as they happen in many team-based combat games. Such maps can be a
valuable tool for retrospective analysis of battles for the purpose of training
or for providing a summary representation for spectators. In this paper an
extension to the battle map algorithm previously proposed by the author and
which addresses a shortcoming in the depiction of troop movements is described.
The extension does not require alteration of the original algorithm and can
easily be added as an intermediate step before rendering. The extension is
illustrated using gameplay data from the team-based multiplayer game World of
Tanks.
