The Vietnamese Giao Riu or ''Pike Hatchet'' was a Pole Arm used in the 15th Century AD. It was considered a ''Melee'' weapon, which required very little training to master. The weapon was designed to neutralize lightly armored (Gambeson-Type or ''Wicker'') Enemies. The wooden handle was 6 to 8-feet in length, It featured a steel or bronze Striking Tip for thrusting and blunt force trauma injuries. The Head of The Riu was a raised (extended) Flat Blade 12-inches long and 5-inches wide. This blade was sharpened on all sides. Attached to the bottom quarter of the primary Pike Blade, was a crescent shaped Axe Head. Sharpened, it was 6 to 8-inches in length. This made The Riu a rather ''nasty'' multi-purpose weapon on Medieval Battlefields in Asia.