Northern Name for Battle: Port Hudson Southern Name for Battle: Port Hudson Location of Battle: East Baton Rouge Parish and East Feliciana Parish, Louisiana Date of Battle: May 29-July 9, 1863 Northern Commander: Nathan Banks Southern Commander: Franklin Gardner Winner: Union Northern Troops Involved: 30,000 Southern Troops Involved: 6,500 Northern Casualties: 5,000 Southern Casualties: 7,208 Interesting Facts: This battle lasted over a month.