Appearance[]
When not in use, it is a droplet of water.
Description[]
The Soldier Soul is a Soul Treasure produced by the Original Soul. Seeking to strengthen the souls of Earthlings, thus decreasing their mortality rate and increasing the probability of producing Universe Venerables, Sitting Mountain Guest created the Original Soul, while giving it the ability to produce lower-level versions of itself to be used by weaker Earthlings. Through the Original Soul, he produced 1,000,000 Soldier Souls[2].
To use the Soldier Soul, one must have the soul of an Earthling, or be Flame Emperor. Additionally, the candidate must have a soul as strong as a normal human Pinnacle World Master's soul[2]. While it is not explicitly described, from the pattern of the General Soul (and the armors produced by the Robbery Armor), the Soldier Soul would increase its user's Spirit Energy by 1,000 times the strength of a normal human Pinnacle World Master's Spirit Energy, the equivalent of the weakest Immortal Marquis.
Since Luo Feng was already capable of using the General Soul with his Earthling Body and Golden Horned Beast Body, he never used the Soldier Soul. It is not revealed if he passed any of the 1 million Soldier Souls to any other Earthlings.