|Leslie Reginald Warren|
21 January 1899|
Natal, South Africa
Royal Air Force
|Years of service||1917–1919|
|Unit||No. 6 (Naval) Squadron RNAS
No. 206 Squadron RAF
|Battles/wars||World War I
• Western Front
|Awards||Distinguished Flying Cross|
Warren was born in Natal, South Africa to English parents. His father Reginald C. Warren, was a solicitor from Weybridge, Surrey, while his mother, Kathleen M. Warren, was from Hurstpierpoint, Sussex. By 1901 the family were resident in Kensington, London.
Flying an Airco DH.9 two-seater bomber Warren was credited with his first victory on 3 May 1918, shooting down an Albatros D.V fighter south of Merville, with Lieutenant O'Brien as his observer. On 7 June he and his observer Second Lieutenant Penny shared in the driving down of an enemy aircraft over Bac Saint-Maur with Second Lieutenant C. M. Hyslop and Corporal J. W .Pacey.
Warren was then paired with Lieutenant Leonard Christian as his observer. On 1 July they sent a Pfalz D.III fighter down in flames over Houthem. On 4 July Warren was appointed a flight commander with the temporary rank of captain. Early on 29 July Warren and Christian drove down another D.III over Roulers, and sent two more down in flames that evening north of Menen. On 1 August they accounted for two more between Menen and Wervicq, bringing Warren's total to eight, and Christian's to nine.
- Lieutenant (Temporary Captain) Leslie Reginald Warren (late R.N.A.S.).
- "This officer has taken part in forty-six successful raids, fourteen of which he has led. In these operations his formation has only suffered one casualty. This remarkable immunity has been in the main due to his brilliant and skilful leadership; he combines keenness and determination with sound, clear judgment. In addition to raids, he has taken many area photographs, and carried out five long-distance reconnaissances, rendering valuable reports."
Warren was eventually transferred to the RAF's unemployed list on 11 March 1919.
- "Leslie Reginald Warren". The Aerodrome. 2016. Retrieved 7 April 2016.
- "No. 30348". The London Gazette. 23 October 1917. pp. 10904–10905.
- "No. 30803". The London Gazette. 19 July 1918. p. 8504.
- "Leonard Arthur Christian". The Aerodrome. 2016. Retrieved 7 April 2016.
- "No. 30913". The London Gazette (Supplement). 20 September 1918. p. 11255.
- "No. 31251". The London Gazette. 25 March 1919. p. 3889.