"The Logia-type Forest-Forest Fruit is mine."
Shen Fei did not immediately kill Green Bull. If he dealt with him that way, wouldn't the Logia-type Devil Fruit be lost? He merely knocked him unconscious and let him collapse to the ground. There were too many people around, so it was inconvenient to put Green Bull into the Devouring Pouch. Besides, he had already left a Flying Thunder God mark on him. Even if Green Bull escaped later, he would not be able to escape Shen Fei's grasp.
Since his opponent was an Admiral, Shen Fei maintained the habit he had learned from the Fourth Hokage—leaving a jutsu formula mark on his opponent during battle.
Although Green Bull was not particularly admirable in character, he was still extremely powerful as an Admiral. Even against one of the Four Emperors, he could stall them for a while if he could not win. He was simply unlucky to have encountered Shen Fei. Against anyone else, he would never have been defeated so quickly.
"Admiral Aramaki!"
If the Marines had still possessed the morale to fight under the encouragement and command of their Vice Admirals earlier, then seeing an Admiral fall so quickly sent their morale plummeting to rock bottom. Many weapons slipped straight from trembling hands. However, their lack of morale did not affect the attacks of the Pacifista Mark III in the slightest.
With their lives at stake, many Marines chose to flee, while quite a few picked up their weapons and continued resisting. But none of that could change their ultimate fate. With no one capable of stopping them, the Pacifistas were absolute killing machines on the battlefield.
"Damn it." On a Warship at sea, Vice Admiral Dole watched Marine soldiers die one after another under the attacks of the Pacifista Mark