2nd Battalion, East Lancashire Regiment.

Awarded the Military Medal in the London Gazette of 23 February 1918.

Hartley was a native of Burnley, Lancashire.

The Burnley Express of 9 March 1918 reported, MINER WINS MILITARY MEDAL. The name of Private Arthur Hartley, (6430), East Lancashire Regiment, appeared recently in the list of those whom the King had bestowed the Military Medal. The soldier, a married man, resided at 61, Sandygate, Burnley, and though he has seen service since the early days of the war, and not a little fighting, he has escaped injury so far. After a few days respite from the fighting and active service, he returns to duty today. Private Hartley was a miner employed at Barden Pit before the war broke out. He joined in August 1914 and went out the November following and with the exception of two or three short periods of home leave, has been with the fighting forces ever since. Asked about the act or acts for which he has been decorated for, for which he wears the ribbon has the medal has not been presented yet, Private Hartley had little to say, and with the exception of informing one of our reporters, the medal had been awarded "for getting men out of trenches and dugouts who had been buried and for delivering messages under shell fire". He left a letter by Lieutenant-General Aylmer Hunter Weston, KCB, DSO, MP; commanding the 8th Corps; the document speaks for itself "To Private A. Hartley, (6430), East Lancashire Regiment, I heartily congratulate you on the honour done to you by His Majesty the King in awarding you the Military Medal for your gallant conduct on the 20th and 21st of November, 1917".