Sumerian artwork from around 2500 BC provides evidence of an early army, in this case lines of soldiers, possibly in formation, equipped with identical armor, helmets, and weapons.

• 从公元前2500年的苏美尔人艺术品上，可以找到早期军队的记录。这些记录显示当时军队装备的铠甲、头盔和武器。