noun
operation order; action order
A formal military or organizational directive to carry out a specific action or operation.
司令部は各部隊に行動命令を下した。
The headquarters issued an operation order to each unit.
作戦命令 is a broader operational order, while 行動命令 specifically directs a concrete action or movement.
Compound of 行動 (action) and 命令 (order).