Veteran Notes/Bio
- Place of enlistment: Sydney, NSW
- Rank on enlistment: Second Lieutenant
- Other decorations: British War Medal 1914–20 and Victory Medal
- Brother of Gunner Ronald Ivan MacMillan, who is also listed on the Moree Boer War and First World War Honour Roll
- MacMillan also served in the Australian Army in the Second World War. His rank was Lieutenant and his service number was Q229018. More information is available via the link to the Department of Veterans' Affairs below.