He had a dream (or "révülés"/meditation) of speaking with the head of Besermian army, so when he woke up, he knew they are preparing to attack, and he could do counteractions to protect the country.
He had a dream (or "révülés"/meditation) of speaking with the head of the Besermian army. When he woke up, he knew they are preparing to attack, and he could take action to protect the country.