Fourth part of a narrative history of 3 Commando Royal Marines involvement in Operation Corporate (the Falkland Islands Campaign). This is a subsidiaray part featuring SITREPs (Situation Reports) from various sub-units with accounts from senior personnel including Logistics (Lieutenant-Colonel Hellberg), Engineers (Major Macdonald), NGS (Lieutenant-Colonel Eve), Artillery (Lieutenant-Colonel Holroyd-Smith), Helicopters (Lieutenant-Commander Stanning), Medics (Commander Jolly), ABU (Captain Edwards) and Rapiers (Captain Turner).