Arma games aren't about running and gunning, they're about tough, tactical decisions and large scale conflict. Laws of War, the newest addition to the game for Arma III, continues Bohemia Interactive's tradition of realistic ambitions. This new expansion is more than just a pack of new weapons, maps, and a short campaign. It's an attempt by the company to create a tool-set integrating international humanitarian law into its military shooter. It's unlike anything I've ever played.

Its mini-campaign, Remnants of War, opens on a brutal death. The campaign is set in the months after the end of the conflict depicted in Arma III, and focuses on what comes after war ends—clean up, reconstruction, and disarmament.

As the game opens, the player controls a local mechanic as he wanders through the woods to bombed out ruins of the village that was once his home. As he walks, an aid worker and a journalist narrate his journey. In a few minutes, the player finds the church where he thinks his missing brother might be. Almost as soon as he crosses into town, he steps on a landmine and dies.

Fade to black and text comes on the screen, reminding us of the horror of landmines in armed conflict. Then players take control of the aid worker who narrated the mechanic's death—Nathan MacDade. He works for the International Development & Aid Project (an NGO modeled on the Red Cross) and he's in the area to disarm land mines. Remnants of War plays out as MacDade wanders through the ruins of the previous game's war, disarms landmines, talks to a journalist about the aftermath of war, and reminisces about the past.