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.
... which 42.9% have children under the age of 18 living with them, 68.0% are married couples living together, 10.0% have a female householder with no husband present, and 18.5% ...