THE grim reality of World War One for soldiers across the globe has been brought back to life in a series of vivid colourised pictures.

Incredible images show British soldiers at captured trenches, as well as on horses and bicycles.

31 Colourised images from World War One show what life was like on the Western front

Other striking shots show Canadian soldiers in the Battle of Amiens in 1918.

This was the second wave of Russian troops waiting to go over the top in Ukraine in 1917 and the Lancashire Fusiliers on a boat at Gallipoli in 1915.

The original black and white photographs were painstakingly colourised by Welsh electrician Royston Leonard.

He said: “I wanted to show World War One from all parts of the world as most pictures you see are just from the Western front.

31 Royston Leonard was inspired by his grandfather who fought in the war

31 A group of Royal Artillery smiling for the picture behind two shells with the words 'Guarantee for Peace' etched on them

31 The original black and white photographs were painstakingly colourised by Welsh electrician Royston Leonard

31 Troops holding the American flag march on while some are on horses

31 The series of specially colourised pictures show troops looking on from the trenches Credit: Royston Leonard / mediadrumimages.com

31 The grim reality of World War One for soldiers across the globe has been brought back to life in a series of vivid colourised pictures Credit: Royston Leonard / mediadrumimages.com

“The images show soldiers from all parts of the world doing their duty and making the best of it.”

Royston Leonard is a 56-year-old electrician from Cardiff.

He added: “We need to remember the lost generation from all parts of the world. Look how young they are and realise we can never let this happen again.

“We did this twice so I urge you to really look at these images and then the rest is up to you.”

31 Royston Leonard said that he wanted to show World War One from all parts of the world Credit: Royston Leonard / mediadrumimages.com

31 Royston said that the images show soldiers from all parts of the world doing their duty and making the best of it Credit: Royston Leonard / mediadrumimages.com

31 Royston said that we need to remember the lost generation from all parts of the world Credit: Royston Leonard / mediadrumimages.com

31 Indian bicycle troops in Somme in 1916 Credit: Royston Leonard / mediadrumimages.com

31 World War One was contemporaneously described as the 'war to end all wars' Credit: Royston Leonard / mediadrumimages.com

31 Indian soldiers in trenches Credit: Royston Leonard / mediadrumimages.com

31 More than 70 million military personnel, including 60 million Europeans, were mobilised in one of the largest wars in history Credit: Royston Leonard / mediadrumimages.com

31 Royston said: 'look how young they are and realise we can never let this happen again' Credit: Royston Leonard / mediadrumimages.com

31 Indian cavalry after their charge in Somme, France Credit: Royston Leonard / mediadrumimages.com

31 Horse-drawn German ambulances suffered bomb damage during the war

World War One was contemporaneously described as the "war to end all wars" and more than 70 million military personnel, including 60 million Europeans, were mobilised in one of the largest wars in history.

An estimated nine million combatants and seven million civilians died as a direct result of the war.

It is also considered a contributory factor in a number of genocides and the 1918 influenza epidemic, which caused between 50 to 100 million deaths worldwide.

Military losses were exacerbated by new technological and industrial developments and the tactical stalemate caused by gruelling trench warfare.

31 World War One was one of the deadliest conflicts in history and precipitated major political changes in many nations involved Credit: Royston Leonard / mediadrumimages.com

31 Wounded soldiers perform Arms Drill at the end of their medical treatment Credit: Royston Leonard / mediadrumimages.com

31 Russian troops waiting for the signal in Ternopil, Ukraine Credit: Royston Leonard / mediadrumimages.com

31 Canadian soldiers in the Battle of Amiens during the First World War in 1918 Credit: Royston Leonard / mediadrumimages.com

31 Unresolved rivalries at the end of the conflict contributed to the start of the Second World War about twenty years later Credit: Royston Leonard / mediadrumimages.com

31 Lancashire Fusiliers boat in Gallipoli in 1915 Credit: Royston Leonard / mediadrumimages.com

31 British soldiers pointing at a sign that says 'old hun line' Credit: Royston Leonard / mediadrumimages.com

31 Irish soldiers in a trench in Mesopotamia during World War One Credit: Royston Leonard / mediadrumimages.com

31 An estimated nine million combatants and seven million civilians died as a direct result of the war Credit: Royston Leonard / mediadrumimages.com

31 A Lewis Gun manned by Indian troops Credit: Royston Leonard / mediadrumimages.com

31 Military losses were exacerbated by new technological and industrial developments and the tactical stalemate caused by gruelling trench warfare Credit: Royston Leonard / mediadrumimages.com

31 This war is also considered a contributory factor in a number of genocides and the 1918 influenza epidemic

31 World War One began in 1914 and ended in 1918

31 The war began because of the assassination of Archduke Franz Ferdinand of Austria

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It was one of the deadliest conflicts in history and precipitated major political changes, including the Revolutions of 1917–1923, in many of the nations involved.

Unresolved rivalries at the end of the conflict contributed to the start of the Second World War about twenty years later.