Complex sentence: After that, the 95th Rifles was part of the British army in Spain under Sir John Moore: after the defeat of the Spanish armies, Moore retreated towards Corunna, hoping to draw the French armies away from Portugal.
Split into simpler sentences: After that, the 95th Rifles was part of the British army in Spain under Sir John Moore. After the defeat of the Spanish armies, Moore retreated towards Corunna, hoping to draw the French armies away from Portugal.