noun
three-dimensional warfare
Military term for combat that fully uses air, land, sea, and sometimes space or cyber dimensions, as opposed to traditional surface-only warfare.
現代の軍事演習では立体戦が重視されている。
In modern military exercises, three-dimensional warfare is emphasized.
Compound of 立体 (three-dimensional) and 戦 (war, battle). The term likely arose in modern military contexts to describe warfare that integrates multiple domains.