What is regarded as the most responsive means to indirect fire for maneuver commanders?

Mortars are considered the most responsive means to indirect fire for maneuver commanders due to their unique characteristics. They are typically lightweight and can be rapidly deployed close to the front lines, which allows for quick engagement of targets. The short ranges and high angles of fire that mortars offer make them particularly effective in providing immediate fire support to ground units that are maneuvering or engaging in close combat situations.

The quick reaction time of mortars is essential for maneuver commanders who need timely support to exploit opportunities or defend against threats. Mortar teams can often change positions quickly, adapting to the dynamic battlefield, and can also fire a variety of munitions to meet different operational needs.

Other options, such as howitzers, while powerful, generally require more time for setup and are often stationed farther away, making them less responsive in rapidly changing situations. Artillery command posts coordinate and manage fire support but do not deliver fire themselves, and attack helicopters, while providing air support, may not always be as immediately available as mortars when ground forces require quick reactions. Thus, mortars stand out as the most effective and responsive form of indirect fire for maneuver commanders on the battlefield.