Webster's Revised Unabridged Dictionary · 1913

Tactics

Tactics , noun

[Greek taktika` pl., and taktikh` (sc. te`chnh, sing., from taktiko`s fit for ordering or arranging, from ta`ssein, ta`ttein, to put in order, to arrange: compare French tactique.]

1.
The science and art of disposing military and naval forces in order for battle, and performing military and naval evolutions. It is divided into grand tactics, or the tactics of battles, and elementary tactics, or the tactics of instruction.
2.
Hence, any system or method of procedure.