noun which may take the genitive case particle 'no'
Used as a no-adjective to describe things from a military or strategic perspective, often in formal or analytical contexts.
その地域は軍事上重要な拠点だ。
That area is a strategically important base.
軍事上の理由で詳細は公表されなかった。
Details were not disclosed for military reasons.
Compound of 軍事 (military affairs) and 上 (from the viewpoint of).