Tactics is the collective name for methods of winning a small-scale conflict, performing an optimization, etc. This applies specifically to warfare, but also to economics, trade, games and a host of other fields such as negotiation.
... called a "caturtitatpurusha" (caturti refers to the fourth case--that is, the dative). Incidentally, "tatpurusha" is a tatpurusha ("this man"--meaning someone's agent), ...