The Scout Regiment, also known as the Survey Corps, is the branch of the Eldian military most actively involved in Titan combat, research, and expeditions beyond the Walls. Their primary mission is to expand humanity’s reach and uncover the secrets of the Titans — often at great personal risk.

Because of their constant battles with Titans, Scout Regiment members are the most skilled in using omni-directional mobility gear and anti-personnel gear. While their early missions were met with heavy losses and little progress, they remained a powerful symbol of hope — represented by their iconic insignia: the Wings of Freedom.

By the year 850, their efforts led to the successful resettlement of Wall Maria. By 854, the Scout Regiment had evolved into the Eldian military’s main expeditionary force, now engaged in open warfare against the nation of Marley.

The Scout Regiment’s primary mission is to conduct expeditions beyond the Walls, engage Titans in combat, and reclaim lost territory for humanity. Before the fall of Wall Maria, they carried out frequent scouting operations outside, though with devastating casualties due to constant Titan attacks. After the breach, their duties expanded to laying supply routes from Wall Rose’s Trost District to Wall Maria’s Shiganshina District in preparation for sealing the Wall.

In addition to combat, the Scouts are tasked with research and intelligence-gathering on Titans. Through these efforts, they uncovered key findings such as:

• Titans’ dependence on sunlight
  
  

• Tolerance to pain
  
  

• The existence of intelligent Titans
  
  

After Eren Yeager’s Titan powers were revealed, protecting him and studying his abilities became one of the regiment’s top priorities.

In later years, as Paradis Island learned more about the outside world, the Scouts shifted from mere survival to becoming the spearhead of Eldia’s military power, leading direct campaigns against Marley.

The Scout Regiment is the smallest of the three military branches, with an initial strength of only 300 soldiers. This number decreased drastically due to their high death rate, which made recruitment extremely difficult.

At the top of the chain of command is the Commander, followed by four Section Commanders. Beneath them are Senior Team Leaders, Team Leaders, and their respective squads. Supporting staff include Medical Officers, Veterinary Officers (for cavalry maintenance), and Remuneration Officers (who also act as squad leaders).

Despite their limited manpower, the Scouts relied heavily on their 600 specially bred horses, prized for their speed, stamina, and calm temperament.

During the Battle of Shiganshina District, the regiment suffered catastrophic losses, with nearly all soldiers and horses wiped out by the Beast Titan and the Colossal Titan, leaving only nine survivors.

In the years that followed, the Scouts were rebuilt with the help of many new volunteers, both young and old, which restored their strength enough to form multiple squads again. By the time of the Liberio Raid in Marley, Armin Arlelt had become the 15th Commander, continuing the regiment’s role as the vanguard of Eldia’s survival and dominance.