According to Li Linghai, while the Deep Sea Fleet was a "rebellion army" that had not surfaced yet, it had quite a roster of great talents and generals. The abilities of the commanders at every level were far better than those of the deep-sky fleets of the Imperium at the same level.
It was especially so for the bottom-level commanders in the frontline, who were definitely the elites that had survived hundreds of battles.
The elites joined the Deep Sea Fleet for various reasons. But getting to the bottom of it, it was mostly because the channel of ascension had been blocked and because of the injustice caused by the monopolization of nobles and magnates.
The injustice had been enlarged by countless times in the fierce war. On many occasions, it even concerned the life and death of the young officers. Naturally, it raised fierce resistance.