Signal Flare

Out beyond shouting distance, soldiers talk with smoke. The signal flare serves both the Garrison and the Survey Corps, though each branch bends it to different ends. Garrison officers fire flares to report mission progress up the chain of command, while Survey Corps squads spread across open country use them to keep an entire expedition informed, often with Titans closing in. Improvisation extends the tool further: a well-placed smoke cloud can screen allies from enemy eyes or check a fast-moving Titan's charge.

Rounds arrive as pre-loaded barrels that lock onto the flare pistol. A spent barrel is simply discarded and swapped for a fresh one before the gun can fire again. Meaning rides on color, and each branch keeps its own code.

For the Garrison, red announces a failed mission and yellow a successful one, with the caveat that a yellow appearing after a red overrides the failure signal. The Survey Corps runs a richer vocabulary, formalized for the 57th Expedition Outside the Walls: red marks a Titan sighting so squads can route around it, black warns of an Abnormal, purple screams emergency, blue orders a retreat, and yellow declares the operation over for better or worse. Green carries direction itself; the commander fires it toward the new heading and relay soldiers repeat the shot down the formation.

One special round abandons smoke entirely. During the operation to lure the Female Titan into the Titan Forest, Levi Ackerman fires an acoustic shell that shrieks at high pitch instead of leaving a trail.

The Survey Corps is the flare's heaviest user, its long-range scouting formation depending entirely on relayed smoke signals to bend around Titan contacts without engagement. The Garrison keeps the simpler two-color reporting system for operations near the Walls. Levi's acoustic shell during the Female Titan's capture operation stands as the tool's most memorable single use.