Source: Leicestershire War Memorials Project.
Was serving with 2nd btn. in 1905. Appointed corporal in 1906.
https://royalleicestershireregiment.org.uk/entity/90884-gilbert-harry?q=

Source: Michael Doyle Their Name Liveth For Evermore: The Great War Roll of Honour for Leicestershire and Rutland.
He was the son of Thomas Gilbert, a shoe trade finisher, born 1858 in Leicester and his wife Sarah Ann Gilbert, born 1857 in Leicester. Harry, a schoolboy was born in the 4th quarter of 1884 in St. Margaret’s, Leicester, his siblings were, Albert, a schoolboy, born 1883, Arthur, a schoolboy, born 1888 and Beatrice, born 1891, all his siblings were born in Leicester, in April 1891 the family home was at Charlotte Street, Leicester. In March 1901 Harry was employed as a shoe trade clicker and was residing in the family home at 62, Syston Street, Leicester, together with his father, a shoe trade finisher, his mother and siblings, Albert, a shoe trade finisher, Arthur, a shoe trade clicker, Edith, born 1891, George Henry, born 1896 and Tom William, born 1899, the latter three siblings were all born in Leicester. In April 1911 Harry was employed as a general labourer and was residing in the family home at 15, Hastings Road, West Humberstone, Leicester, together with his father a general labourer, his mother and siblings, Edith, a hosiery trade worker, George, a shoe trade worker and Tom, a schoolboy. Harry attested into the 3rd Battalion Leicestershire Regiment (Militia) for an engagement of 6years on the 18th September 1900 in Leicester. He gave his place of birth as Belgrave, Leicester and his age as 17 years. He gave his present place of residence as 62, Syston Street, Belgrave, Leicester, and his trade or calling as shoe hand, his current employer was Mr. H. Gardner, Shoe Manufacturer of Leicester. He confirmed that he was unmarried. His medical examination recorded that he was 5 foot 6¼ inches in height, weighed 107 pounds and he had a chest measurement of between 31 and 33½ inches. His complexion was described as pale, his hair colour was light brown and his eyes were light hazel. It was noted that he had a mole on his left wrist. He gave his religion as Church of England. He was pronounced fit for Militia service. His record of service began when he joined the Depot of the 3rd Battalion Leicestershire Regiment (Militia) as a Private, service number 7501 on the 18/9/00. Embodied on the 6/11/00. Stationed at the Curragh, Ireland on the -?-. Disembodied on the -?-. In training on the -?-. Embodied on the -?-. Stationed at -?- on the -?-. Embarked for South Africa on the 26/3/02. Returned to England on the -?-. Disembodied on the 3/10/02. Transferred to the Leicestershire Regiment on the 26/1/03. Harry attested into the Army on a Short Service engagement of 3 years with the Colours and 9 years in the Reserve on the 26th January 1903 in Leicester. He gave his place of birth as St. Margaret’s, Leicester and his age as 19 years and 5 months, he gave his trade or calling as shoe hand. He confirmed that he serving with the 3rd Battalion Leicestershire Regiment (Militia). His medical examination recorded that he was 5 foot 8¼ inches in height, weighed 122 pounds and he had a chest measurement of between 33½ and 36 inches. His complexion was described as fresh, his hair colour was light brown and he had grey eyes. It was noted that he had a soldier, a woman and snake tattoo on his right forearm. He gave his religion as Church of England. He was pronounced fit for Army service. He gave his father, Thomas Gilbert, his mother, Ann Gilbert, his older brother, Albert, younger brothers, Arthur, George and Thomas and his younger sister, Edith Gilbert, all of 34, Wharf Street, Leicester as his next of kin. His record of service began when he joined the Depot of the Leicestershire Regiment as a Private, service number 6666 on the 27/1/03. Transferred to the 2nd Battalion Leicestershire Regiment on the 21/2/03. Permitted to extend his service with the Colours to 8 years on the 14/10/03. Granted service pay 2nd Class on the 18/5/04. Transferred to the 1st Battalion Leicestershire Regiment on the 18/2/05. Transferred to the 2nd Battalion Leicestershire Regiment and appointed Lance Corporal, unpaid on the 19/5/05. Appointed Lance Corporal, paid on the 28/10/05. Promoted Corporal on the 21/9/06. Reverts to Private at his own request and entitled to two Good Conduct Badges on reversion on the 26/6/07. Noted that Reversion was not in order to escape trial by Court Martial. Mobilised on the 5/8/14. Killed in action, place not known on the 23/10/14. A summary of his service records: Home Service, 26/1/03 – 8/2/04, 1 year 14 days. India, 9/2/04 – 20/9/06, 2 years 238 days. India, 21/9/06 – 26/1/11, 4 years 128 days. Home Service, 27/1/11 – 23/10/14, 3 years 270 days. Total service 11 years 271 days. The following information was provided by Harry’s mother on the 19th April 1919, and was witnessed and signed by G. Llewellyn Davies, a Clerk in Holy Orders of St. Saviour’s Vicarage, Leicester on ARMY FORM W. 5080 (Information on deceased soldier’s family) Father of soldier, Thomas Gilbert of 31, Shenton Street, Leicester. Mother of soldier, Sarah Ann Gilbert of 31, Shenton Street, Leicester. Full blood brothers of soldier, Albert Gilbert, age 36 of Humberstone, Arthur Gilbert, age 31 of 27, Russell Street, George Henry Gilbert, age 24 of Bow Street, Tom William Gilbert, age 20 of 31, Shenton Street. Full blood sisters of soldier, Edith Gilbert, age 27 of 31, Shenton Street. Harry was awarded the 1914 Star, British and Victory Medals. Harry’s surviving Militia and Regular Army service documents are in a very poor condition, and much of the finer detail relating to the period of time that he spent in the army, is either illegible or missing, hence the sparse overall description of his military and personal family history.
The War Diary records: 23 Oct-14 - The Battalion had relieved the West Yorkshire Regiment on the 21st October at the Chemical Factory at Rue du Bois, they held the trenches and were attacked at dawn and again at 4.30pm. Both attacks were beaten off, they were heavily shelled all day. Casualties were Captain Gruchy killed, Lieutenant Bayfield wounded, six other ranks were killed and twenty one were wounded. Harry was one of seven Leicestershire men who lost their lives on this day.
On Friday November 27th 1914 The Leicester Journal published the following article under the heading. “THE ROLL OF HONOUR.” – Lance-Corporal H. Gilbert, of the 1st Leicester’s, who has been killed in action, was employed on the Midland Railway.
On Saturday November 28th 1914 The Leicester Chronicle and Leicestershire Mercury published the following article under the heading. “LEICESTERSHIRE AND THE WAR.” – LOCAL ROLL OF HONOUR. – BROTHERS WHO DIED FOR KING AND COUNTRY. We have been furnished with the following particulars of casualties to local men: – Two brothers, whose home was at Drayton, Leicestershire, have been killed fighting for their country. One was Arthur Edward Stokes, an Able Seaman (Reservist), who was on the Good Hope, lost on November 1. He was aged 25. His brother, Private Edgar Stokes, also a Reservist, of C Company, 1st Northamptonshire Regiment, was killed in action at Ypres on October 31. He was aged 27, and was formerly in the Birmingham City Police force. Their father, Mr. G. T. Stokes of Drayton, writes notifying those of the sad loss, and adds with reference to the soldiers and sailors generally. “We ought to be proud of our men’s splendid conduct, and of their cheerful and enduring pluck.” Lance Corporal H. Gilbert, of the 1st Leicester’s whose home was at 31, Shenton Street, Leicester, has been killed in action. He served in the South African War, was a Reservist, and when called up was employed on the Midland Railway.