Brigadier General Randle Barnett Barker, DSO & Bar (19 June 1870 – 24 March 1918) was a British Army officer who was killed at Gueudecourt, France, while in command of the 99th Brigade.

[16] The 22nd Royal Fusiliers landed in France in November 1915 as part of the 99th Brigade (2nd Division) under the command of Brigadier General Richard Kellett.

The two men cooperated successfully, and Barker frequently stood in as brigade commander in Kellett's absence.

[12][19][20] During the Battle of the Ancre he led his battalion and a collection of other detachments ('Barker's Mixed Force') to clear the notorious German strongpoint known as the Quadrilateral.

[21][22] At the Battle of Arleux during the Arras Offensive, 22nd Royal Fusiliers was engaged in bloody fighting at Oppy Wood, after which Barker lamented that only 40 of his men had come out of the action with him.

At this most critical moment he reorganised and rallied all the men of his brigade who were within reach, and by his promptitude and fine leadership won back most of the objective, and maintained it until relieved.

[12][26][27][28] When the German spring offensive was launched on 21 March, the 2nd Division was in reserve in the vulnerable Flesquières Salient, which came under heavy attack.

It was virtually overwhelmed in the fighting next day, and Barker and his brigade major were unable to reach the battalions as he struggled to maintain a link between V and VII Corps as they were pushed back.