https://youtu.be/8opdQF2TZYs. Line of Duty (LOD) Benefits — If you are a member of the United States military Reserve,and you become injured, become ill, or develop a medical condition while on duty, you may be entitled to Line of Duty benefits, commonly called LOD benefits. A Line of Duty determination confirms that your condition happened while you were serving—during Active Duty, Annual Training, IDT drills, orders, or authorized travel. This determination is critical. Without it, you may lose access to benefits you earned.