The 800 monks' corps was composed of the high-level Qi-refining masters of Buddhism all over the world. Each of them was at high-level Qi-refining, so they were very powerful.
Moreover, what the 800 monks' corps practiced was the art of the military formation. In other words, the full power of the formation wouldn't be affected because of a few people, like 18 guardian warriors or 36 arhats.
In the final analysis, the monk corps was similar to the military formation of Militarism, but it was much more powerful than the general military formation of Militarism.
Buddhism sent out 800 high-level Qi-refining monks, let them practice the military formation of Buddhism, and trained them as soldiers. Therefore, it could tell that Buddhism had a profound foundation for hundreds of years of a
