Marley's Paradis Island Surprise Attack was a counterattack launched by the Marleyan military and Warriors against Paradis Island in retaliation for Eren Jaeger's raid on Liberio.
Prelude: With the Founding Titan in Eren Jaeger's possession and Zeke Jaeger acting as a Titan of royal blood, Paradis Island acquired full potential use for the Founding Titan to awaken the Titans within the Walls and begin the Rumbling whenever necessary as deterrence against foreign invaders. News of Eldia victory in Liberio was quickly announced to the public, leading to much rejoicing among the civilians with particular praise going to Eren. Funerals were held for the nine Scouts who died in the raid on Liberio, and captives Gabi Braun and Falco Grice were made into prisoners of war, though they would quickly escape from their captivity to wander the southwestern territory of Wall Rose.
Delayed preparations for the Rumbling: With the Founding Titan in Eren Jaeger's possession and Zeke Jaeger acting as a Titan of royal blood, Paradis Island acquired full potential use for the Founding Titan to awaken the Titans within the Walls and begin the Rumbling whenever necessary as deterrence against foreign invaders. News of Eldia victory in Liberio was quickly announced to the public, leading to much rejoicing among the civilians with particular praise going to Eren. Funerals were held for the nine Scouts who died in the raid on Liberio, and captives Gabi Braun and Falco Grice were made into prisoners of war, though they would quickly escape from their captivity to wander the southwestern territory of Wall Rose.
Global hostility against Eldia: As Willy Tybur had hoped and planned for, the deaths of countless ambassadors present in Liberio during the raid led to many nations to see Paradis Island as a genuine threat. The major nations pledged support to Marley, forming a global military alliance that was preparing to conduct a scorched-earth operation against Paradis within six months. Despite the international support, Reiner Braun felt that Zeke would not remain idle and knew that the Marleyan army would not strike back suddenly, but take their time to consolidate their forces.
Rise of the Jaegerists: Against the wishes of the Paradis military, several Scouts leaked information of the imprisonment of Eren and the volunteers to the public, causing a significant amount of outrage in the civilian and military population alike. Opponents of Eren's imprisonment criticized the military's secretive nature against the public where they had once been proponents of full disclosure. The information leaks were traced back to Scouts Floch Forster, Louise, Holger, and Wim, of whom Floch expressed their collective belief that Eren should rule Eldia as the Founding Titan and bring their nation to new glory.
Source: Paradis Island Surprise Attack (Anime), available under CC BY-SA 3.0.