Kalran: Tales of the four nations/Penitent Miner

History
Instead of using machines to collect supplies; Ouroboros instead rely on penitent miners, basically teenagers converted into the penitent legion, equipped with mining equipment overseen by the driver. Each Penitent Miner, a dual purpose harvester and refinery, carries five miners to the nearest supply field where they started collecting and bringing it back to the refinery where it was refined right away and turned into cash to supply the Commander's war efforts. When a Penitent Miner is destroyed by an enemy, the miners will charge towards the enemy to fight. However, as they were equipped with nothing but shovels, pickaxes, and cumbersome drills they were mere cannon fodder. Killed miners can be replaced with no visible cost, but Penitent Miners have limited living space inside, allowing only five miner per Pickaxe to be carried.

Trivia

 * The unit is based of Yuri slave miner from red alert 2