The trench lighter was a military innovation originally crafted from spent bullet casings and pieces of metal in the early 1900s. Soldiers in the First World War would carry the lighters wherever the fight took them. This Trench Lighter is modeled after those iconic pieces. Simply slide up the flame protector so you can light it and slide it back down to snuff out the flame. You can even use the Trench Lighter when the wind is whipping, like it would be in a trench. The keyring loop on the back end is attached to a screw cap that secures the lighter fluid. Consider it a bit of military history for your EDC.