After a few days' rest, Gálvez advanced on Baton Rouge, only 15 miles (24 km) from Fort Bute.[1] When Gálvez arrived at Baton Rouge on 12 September, he found Fort New Richmond garrisoned by over 400 regular army troops and 150 militia, under the overall command of Lt. Colonel Alexander Dickson.[8] After nine days' siege, Dickson surrendered.