Complex sentence: In August 1814 she joined Captain Gordon of and his small squadron in an expedition up the Potomac to bombard Fort Washington while Vice-Admiral Alexander Cochrane landed the army at Benedict, Maryland on the Patuxent River on 19 and 20 August.
Split into simpler sentences: In August 1814 she joined Captain Gordon of and his small squadron. They then sailed up the Potomac to bombard Fort Washington while Vice-Admiral Alexander Cochrane landed the army at Benedict, Maryland on the Patuxent River on 19 and 20 August.