The first batch of 344 Iron Riders from Latovia, of which 47 were killed and reincarnated as new Iron Riders, but besides that, only 30 survived.
The physical and neurological injuries encountered in battle have brought them to the brink of hell, leaving them with severe sequelae that affect their combat and mobility, or unable to bear high-intensity prosthetics, forcing them to withdraw from the front line and return to civilian life.
Some Iron Riders severely injured in battle may return to combat after rest and rehabilitation training, but that requires time.
In other words, the actual casualty rate of the first batch of Iron Riders slightly exceeded one-fifth. Considering the injuries sustained in battle, the casualty rate has actually surpassed 50%.
The existence of Iron Riders is one in ten thousand, and for Latovia with its fifty thousand population, it requires time to train more truly qualified Iron Riders.