John Millgate was born in Lenham, Maidstone, Kent, the son of Mr J.C. Millgate of Hegg Hill Farm, Smarden, Kent and working as a butcher. Enlisting under the name 'John Crump' on 9 Sep 1914, Millgate joined 11th Battalion, A.I.F. and attached to the 12th Light Trench Mortar Battery, A.I.F., admitted to the 11th Btn. Hospital on the Gallipoli Peninsular with diarrhoea. Millgate was then transferred to Mudros with dysentry and from there to Malta and finally Harefield Hospital in England. He managed to go awol from Harefield Hospital on 30 Dec 1915 until 3 Jan 1916. On return he was awarded 120 hours detention and forfeited 5 days pay. On recovering from his spell of Dysentry Millgate was sent back to Tel el Kebir, Egypt on 28 Mar 1916. Here he was transferred to the 48th Btn A.I.F. and with them, on 2 June 1916, he boarded H.M.T. Caledonian at Alexandria and disembarked Marseilles on 9 June 1916 to join the BEF in France. In 1917 his Bty was moved to Belgium in preparation for what would be come the 3rd Battle of Ypres. He was killed in action while digging in his gun on 8 July 1917.
The following extract is from Millgate's official papers: "Killed in action on 8 June 1917 by a shell wound (together with Pte. J. Peverill). They were buried together where they fell by 5 members of this battery. The map reference of the grave over which a small cross erected was approximately 1000 yards due east of the outskirts of Messines and about 60 yards of the Messines-Les Quatre Rois Cabinet Road. At the time of his death L/Cpl. Crump was engaged with the other members of his gun crew, digging his gun emplacement when a shell burst amongst them. Death was instantaneous. Millgate is commemorated at Ypres menin Gate Memorial.