noun, noun or participle which takes 'suru'
Refers to a small-scale surprise attack, often by a small group. Rare and somewhat literary; in modern Japanese, 奇襲 (きしゅう) is more common.
敵は夜陰に乗じて掩撃を仕掛けた。
The enemy launched a sneak attack under cover of darkness.
小
The surprise attack by a small unit succeeded.