To help the Federation's high command maintain their lie, every day in the First Regiment's camp, a vial of potion was distributed to all the warriors, who were then watched until they drank it.
Of course, it wasn't actually a potion.
The dirt-poor Federation didn't have that many potions to waste.
In reality, it was just an ordinary stamina-replenishing beverage.
They watched the warriors drink it all to prevent them from secretly hiding it and having it tested elsewhere.
They also feared that a warrior might not drink it, yet still go into a frenzy, which would expose the ruse.
The Federation had already come up with an explanation for the first day, claiming publicly that it was an experiment and the potion had been mixed into the food.
As for why it worked for some but not others, they explained it was due to differences in natural aptitude.
Furthermore, the potion's effects were enhanced by Miss Jiang Qin's soothing.
Therefore, it also tested a person's other abilities.
