King's Own Royal Lancaster Regiment later tranferred to the Somerset Light Infantry.

Awarded the Military Medal in the London Gazette of 11 November 1916.

Marsden was a native of Burnley, Lancashire.

The Burnley Express of 24 February 1917 reported, FROM MONS TO THE SOMME. Burnley Soldier Awarded Military Medal. Another Burnley soldier to be awarded the Military Medal is Private (9595), G. Marsden of the King's Own Royal Lancaster Regiment, and now serving with the Somerset Light Infantry, whose home is at 25, Simpson Street. He was amongst the first lot of troops to leave England in August, 1914, and he has been all through the campaign from Mons to the Somme. He was with the Fouth Division at Le Cateau when General Smith-Dorien put the division into the field to stop the German rush at all costs, so as to let the rest of the army get away. He got his Military medal for a very daring act. He was one of six who volunteered to go out and cut the German barbed wire in broad daylight. Of the six who 'went over', an offer and two men were killed, two were badly wounded, and Private Marsden slightly wounded.

Registered paper 68/121/57.