Saved by shrapnel helmet
Soldier demonstrates his scar and pierced helmet, during World War I. This photograph would have made ideal propaganda material as its accompanying caption demonstrates. The soldier in the middle of the scene is happy and triumphant. Despite the bandaging on his head, he is still carrying all his equipment and looks ready for action. The story, helmet and resulting scar would probably have provided first rate barrack entertainment! [Original reads: ‘Saved by shrapnell helmet. This soldier, on the way to hospital after being bandaged at Field Dressing Station, shows the helmet which saved his life.’]
source: 
http://digital.nls.uk/first-world-war-official-photographs

Saved by shrapnel helmet

Soldier demonstrates his scar and pierced helmet, during World War I. This photograph would have made ideal propaganda material as its accompanying caption demonstrates. The soldier in the middle of the scene is happy and triumphant. Despite the bandaging on his head, he is still carrying all his equipment and looks ready for action. The story, helmet and resulting scar would probably have provided first rate barrack entertainment! [Original reads: ‘Saved by shrapnell helmet. This soldier, on the way to hospital after being bandaged at Field Dressing Station, shows the helmet which saved his life.’]

source: 

http://digital.nls.uk/first-world-war-official-photographs