noun
Military term for a formal directive that assigns a mission and outlines the plan for its execution. Used in contexts such as military planning, command, and operations.
See also: 作戦 (さくせん)
司令部は各部隊に作戦命令を発令した。
The headquarters issued an operation order to each unit.
Compound of 作戦 (operation, strategy) and 命令 (order, command). The exact historical derivation is uncertain, but the term is a standard modern military expression.