How WW1 changed emergency medicine
16 June 2014 Last updated at 10:12 BST
As the centenary of the start of World War One draws nearer, BBC Wales is exploring how core roles in the modern British Army were first developed during the conflict.
From the introduction of gunners on tanks to signallers using radio communications, these technological advancements had far-reaching consequences on the war then and on today's battlefield.
It is a role L/Cpl Scott Haplin from Kidwelly in Carmarthenshire knows only too well. He has been a first responder for 1st The Queen's Dragoon Guards for three years. In that time he has seen plenty of action as part of the Welsh Cavalry.
Charlotte Dubenskij reports.