提供战区广域范围内的防空防导。
除了参与防空战AAW(Anti-aircraft warfare)
反水面战ASuW(Anti-surface warfare)
反潜战ASW (anti-submarine warfare)
It had specialization inlong range AAW
[Ballistic Missile Defence sometimes too]
andLong Range Land AttackCapability
with help of Land Attack Cruise Missiles.
驱逐舰还有超强的远程防空作战（弹道导弹防御）能力，
具有远程对地打击能力。
护卫舰有同样的保驾护航任务
但是一般没有远程对地打击能力
A Frigate will have the same missions, sans the land attack.
