After the American victory at Edson’s Ridge, the Marines on Guadalcanal were reinforced by the 7th Marine Regiment, which brought the total US strength on the island to about 20,000. The American ground commander General Alexander Vandegrift decided to expand the Marines’ perimeter westward by attacking Japanese positions at the Matanikau River. In addition, an American naval force met a Japanese fleet at Cape Esperance, near the site of the disastrous American defeat at Savo Island. How did these engagements turn out? Dave and James will let you know!