Rheitgeistiden (or flying posts) were an enchanted means of transportation originally used exclusively by the Voroshk family, and featured prominently during Soldiers Live. They were log-like in shape and had pedals for steering; when not in use, the Voroshk stood them upright on end. Along with the protective body covering called the shefsepoken, the rheitgeistiden were viewed as the most privileged status symbol in the Voroshk world. The magic that powered them was extremely volatile and dangerous. At least seven of the conveyances were made available to the Black Company after several Voroshk were forced to ally with them.
All rheitgeistiden contained within them a volatile kind of sorcery which, if triggered appropriately, would result in a devastating explosion. The two kinds of triggers are combat and ritual incantation:
- Examples of rheitgeistiden exploding in combat: at least one post exploded during the ambush of Lisa Daele Bowalk. And later, early in the Siege of Taglios, 2 of the Company's 7 rheitgeistiden (flown by General Chu and Mihlos Sedona) were detonated by fireball projector crossfire coming from Mogaba's soldiers. The resulting double explosion flattened about an acre of the sprawling Palace of Taglios.
- Ritual incantation: to keep power restricted to their family and prevent theft, the Voroshk built all the rheitgeistiden such that the simple recitation of a particular magic verse would cause the sorcery inside a specific post to explode with a massive concussive blast. Croaker used this functionality twice to his advantage. First, he tricked the chief Voroshk elders into detonating a post which was buried near their shadowgate, which allowed virtually all the shadows of the glittering plain to invade the Voroshk world and wipe out countless people and livestock. Second, Croaker detonated the rheitgeistide which Goblin was riding the moment he pierced Kina's brain with One-Eye's spear.