We don't hear as much about ISIS as we used to, but the fight against their particular brand on evil is still being waged.
In Syria, for example, a Kurdish militia group called YPG is still waging war on the terrorist group. The YPG is composed of volunteers, drawn largely from areas around and in Syria, but also from countries as far away as the United States. As the militia is currently backed by the United States, it's not a crime for American citizens to find their way to groups like the YPG, get trained up and then deploy to the front lines. Caleb Stevens, a 23 year old from Illinois, felt that he wanted to make a direct impact in the world by standing against those who would do harm to unarmed civilians. After talking to YPG representatives online, he made his way overseas and boned up on the use of Soviet-era small arms before heading to the front lines with his unit in Syria. Caleb took the fight to ISIS, fending them off from civilians for months before he was shot in the calf, bringing his war, at least for the time being, to an end.
In the wake of being wounded, he sought out treatment, first at hospitals in Syria, Baghdad and Jordan, before walking into a hospital emergency room in Chicago to be properly patched up.
It's one hell of a story, it's covered, in detail, over at the Chicago Tribune.