Reincarnated as Wife of a Young General

Story description:

Yanna is a normal college student in their town. No dream, apart from building a house she can call her own, but apparently her life changes when she woke up in an unknown place for she can't name and explain.

Suddenly the normal life she has turns to actions and too dramatic situation

How can she handle action?
When way back before, all she does was to watch anime and read novels.
How can she handle being the Wife of a Young General?