Lt Col Dunn (Anthony Nicholls), the senior doctor of the hospital, tells the men that they will be receiving a new patient soon, and that they should be extra kind to him. He is a Scot, and, while he seems to have recovered from his operation, his abnormal kidney means that he will die within a few weeks. Dunn tells the men that the Scot will be outwardly healthy until one day he will suddenly die when his kidney fails. When the Scot arrives, Cpl. Lachlan 'Lachie' MacLachlan (Richard Todd) is very gruff and mean. He is constantly suspicious of his fellow patients attempting to make friends with him.