The Expeditionary garrison is a military base whose final days transform it from a position of military preparation into a nearly emptied camp. As soldiers set out to attack a viral mine and many fail to return, the garrison becomes both a place of waiting and the departure point for Peter and Amy’s journey onward.

Setting and military preparations

At dawn, the garrison’s yard is crusted with ice after a cold night. Vehicles are loaded, and nearly all of General Vorhees’s soldiers assemble at the gate; one squad stays behind to man the walls. Outside the gate, the preparations signal a campaign: Vorhees and Alicia study a map over a Humvee’s hood while Greer supervises the loading of supplies from horseback.

The operation is aimed at an exposed mine shaft where viral creatures are believed to be gathered. The plan involves lowering explosives, diesel fuel, and ammonium nitrate into the shaft with a winch, while other soldiers search for additional openings through which survivors might escape. The garrison’s activity has changed character: the period of waiting and small forest missions is over, and its soldiers are preparing for battle.

A depleted camp

The attack leaves the garrison with a changed population and an uncertain future. Forty-six men are lost, including Vorhees. Some may have been taken up rather than killed, and soldiers discuss sending out search parties, but Greer refuses: the battalion has a rendezvous with Third Battalion to make, and the window for departure is closing.

The camp is packed for the move south. Food, weapons, equipment, and most of the larger tents are readied for transport; the lights, nearly empty fuel tankers, and one Humvee are left behind. Greer divides the battalion into a small mounted scouting party led by Alicia and a larger force traveling in trucks and on foot. With the ranks thinned, he gives Alicia a battlefield commission: she is now Lieutenant Donadio.

The remaining garrison feels strange and empty. With only one squad left to man the walls, Amy and Sara can move freely through the camp, but there is little for them to do except wait. Amy sits in her tent in concentrated silence, and Peter, fearing he may have imagined her voice, asks whether she knows what is happening beyond the walls. She answers that the others are lost in the woods.

Peter’s departure

Peter’s attachment to Alicia helps draw him toward the campaign. Watching her prepare to leave with Vorhees’s soldiers, he feels both unease and an instinctive pull; his uncertainty gives way to the desire to be part of the war. That decision makes the garrison more than a military setting: it is the place where his hesitation about staying behind becomes action.

After the assault and the losses, Peter sees Alicia’s life moving in a direction he cannot share. He does not know what to say to her, and believes she is gone from his life. Yet when the battalion prepares to leave, he makes a different choice: before dawn he packs blankets, warm clothing, a tarp and rope, along with an entrenching tool and a hand axe he has taken from the supply tent. He finds Amy in the women’s tent, where her small pack is already on her lap. Sara is still in the infirmary caring for injured soldiers. Amy asks whether it is time; Peter tells her it is.

Narrative significance

The garrison’s story is shaped by successive departures. First, soldiers leave to confront the mine; then survivors prepare to withdraw south, leaving much of the camp behind. In the emptied space between those movements, waiting becomes a condition in its own right, and Amy’s perception reaches beyond what Peter can see. The base’s final role is not simply to shelter the expedition: it becomes the threshold from which Peter and Amy set out together.