The exhibition includes sketches from local artist Dewi Bowen, a conscripted Bevin Boy who drew sketches during his time at Elliot Colliery, New Tredegar.
A total of 44,000 young men were chosen by ballot to serve in the mining industry - they were named after Ernest Bevin, the wartime Minister of Labour.
The exhibition features Thomas Jones from Abercynon, who served in France, but also traces the contribution all his family made on the home front - taking in evacuees, working in a munitions factory and growing vegetables on the allotment.
The South Welch Regiment, serving in North Africa.
Tasker Watkins was awarded the Victoria Cross as a 25-year-old lieutenant, serving in the Welch Regiment for his leadership under heavy machine gun fire in France in 1944.
South Wales Borderers on D-Day advancing to Vaux-sur-Aure.
Tommy Robins from Treforest was serving in India.
An appeal for people to buy savings bonds, as part of the war effort.
Munitions factory workers arrive for a shift at Bridgend.
Evacuees arriving at Caerphilly station.
Corporal Edward Chapman VC being welcomed home at Pontlottyn. He was decorated for 'magnificent bravery' under fire in the capture of a ridge with the 3rd Monmouthshire Regiment, in the last weeks of the war. He died in 2002, aged 82.
Street party at the end of the war in 1945 in Cromwell Street, Merthyr.
"Their Past, Your Future" is at the Rhyd-y-car Leisure Centre, Merthyr Tydfil until 29 March. Then tours to: Haverfordwest, 2 April-9 May; Chepstow, 13 May-27 June; Caernarfon, 1 July- 6 Sept, Wrexham, 10 Sept-21 Oct; Swansea, 25 Oct-9 Jan 2006.