No. Say eg After how long can you apply to become an officer, once you become a specialist? eg When you become a specialist, after how long can you apply to become an officer?
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CliveI assume you are talking about the army.The United States Army in particular.
AnonymousCan I say, 'after how long can you apply to become an officer after you have been a specialist'?You could probably end up saying that, but it is hardly good structuring. Perhaps the shortest is this: