4-29. The third element of operational art applicable to stability operations is line of effort. A line of effort links multiple tasks to focus efforts toward establishing conditions that define the desired objective. Lines of effort are essential for stability operations where physical and positional references to an enemy force or adversary are less relevant. In stability operations, where the human dimension typically becomes the focus of a stability force, lines of effort often work best to link tasks, effects, and conditions to an objective. Lines of effort are essential to helping commanders visualize how military capabilities can support the other instruments of national power. They prove particularly valuable where unity of command is elusive, if not impractical, and when used to achieve unity of effort in operations involving multinational forces and civilian agencies and organizations.