Complex sentence: By decree of July 27,1808, Napoleon gave the grounds and the buildings of the garden to the city, and during the battle of Toulouse (April 10,1814), the garden was used as artillery point.
Split into simpler sentences: By decree of July 27,1808, Napoleon gave the grounds and the buildings of the garden to the city. During the battle of Toulouse (April 10,1814), the garden was used as artillery point.