Lieutenant-General Sir Fenton John Aylmer, 13th Baronet, VC, KCB (5 April 1862 – 3 September 1935) was an Anglo-Irish British Army officer and a recipient of the Victoria Cross.

From a military background, Aylmer was commissioned into the Indian Army, and immediately involved in fierce fighting on the north-west frontier.

In a singularly heroic action, still in his twenties, he helped rescue Townshend's garrison at Chitral, spearheading the relief column.

Aylmer attended the Royal Military Academy, Woolwich, as a Gentleman Cadet, in the same class as Reginald Wingate, and was promoted lieutenant on 27 July 1880.

[2] Fenton was 29 years old, and a captain in the Corps of Royal Engineers, British Army and Bengal Sappers & Miners (British Indian Army),[3] during the Hunza–Nagar Campaign, India when he won the Victoria Cross in 1891 for the following deed: On 2 December 1891 during the assault on Nilt Fort, British India, Captain Aylmer, with the storming party, forced open the inner gate with gun-cotton which he had placed and ignited, and although severely wounded, fired 19 shots with his revolver, killing several of the enemy, and remained fighting until, fainting from loss of blood, he was carried out of action.

However, shortly after his arrival, he was put in charge of the Tigris Corps that was assembled as the first effort to end the siege of Kut.

[12] The Ottoman troops, under the generalship of Baron von der Goltz only withdrew some six miles up river and occupied another defensive position near the edge of the Suwaikiya Marshes.

Both attacks failed due to lack of initiative and an inability to coordinate the timing of the assaults: they ended up being sequential, not simultaneous as was intended.