Operation Agreement involved an amphibious force of about 400 Royal Marines, 180 Argyll and Sutherland Highlanders (Captain Norman MacFie) 14 Platoon, Z Company, I Battalion, Royal Northumberland Fusiliers (Lieutenant Ernest Raymond) army engineers and Force B (Lt. Col. John Edward Haselden) about 150 SAS approaching from the desert. The amphibious force was split into Force A, supported by destroyers and intended to land on the peninsula north of Tobruk, while Force C, composed of coastal units, was directed towards an inlet east of Tobruk harbour. Force B captured an Italian 152 mm coastal battery but this was quickly retaken by Italian marines from the San Marco Battalion.