The next two weeks the division supported the 43rd Division during its attempts to capture Hill 112 in Operation Jupiter, which was followed by its participation in Operation Greenline, part of the Second Battle of the Odon. Like Epsom, it again attracted German armour but did not succeed. After a brief rest the division, on 23 July, transferred to XXX Corps, under Lieutenant-General Gerard Bucknall, another fellow student at the Staff College in the late 1920s, and saw further very tough action to secure the Bois du Homme as part of Operation Bluecoat at the end of July/beginning of August. On 3 August, MacMillan was wounded in the knee by shrapnel and evacuated to England, later Broadstone Hospital, Port Glasgow. That evening, Lieutenant-General O'Connor, GOC VIII Corps, who greatly admired MacMillan wrote in the following words to his wife: ""Babe" is slightly wounded. It is a tragedy as he has been the mainstay of this party, and stands out head and shoulders above everyone else. He is one of the best, if not the best, and commands the best lot out here. This is beyond dispute. I shall miss him as a friend, collaborator and adviser. Most of the success out here has been the result of his initial efforts." Command of the division passed to Brigadier Colin Barber, formerly commander of the 46th Brigade. MacMillan was appointed a Companion of the Order of the Bath for "his excellent example and untiring efforts" during the period following the landings.