(functioning as singular) military the art and science of the detailed direction and control of movement or manoeuvre of forces in battle to achieve an aim or task
2.
the manoeuvres used or plans followed to achieve a particular short-term aim
[C17: from New Latin tactica, from Greek ta taktika the matters of arrangement, neuter plural of taktikos concerning arrangement or order, from taktos arranged (for battle), from tassein to arrange]