Complex sentence: Davie remained active in the state militia and in the newly-formed United States Army; he served in the state militia during the 1797 crisis with France (immediately preceding the Quasi-War) and was appointed brigadier general in the Army by President Adams.
Split into simpler sentences: Davie remained active in the state militia and in the newly-formed United States Army. He served in the state militia during the 1797 crisis with France (immediately preceding the Quasi-War) and was appointed brigadier general in the Army by President Adams.