You use tactical to describe an action or plan which is intended to help someone achieve what they want in a particular situation.
双语例句
例：
It's not yet clear whether his resignation offer is a serious one, or whether it's simply a tactical move.
他的辞职请求到底是认真的，还是只是个策略，这一点我们尚不清楚。
2.?（武器或军队）战术性的
Tactical weapons or forces are those which a military leader can decide for themselves to use in a battle, rather than waiting for a decision by a political leader.
双语例句
例：
They have removed all tactical nuclear missiles that could strike Europe.