Which term describes the action of focusing all available direct or indirect fires on enemy forces?

The action of focusing all available direct or indirect fires on enemy forces is referred to as suppression. This term is commonly used in military contexts to describe a tactical objective where the goal is to diminish, limit, or neutralize the enemy's capability to operate effectively through concentrated fire. Suppressing enemy forces can reduce their ability to return fire, maneuver, or coordinate effectively, thereby gaining a tactical advantage.

In contrast to other options, "secure" typically means to maintain control over a territory or asset rather than focusing fire. "Reduce" may imply a decrease in enemy capabilities or forces but does not specifically convey the concentrated firing action associated with suppression. "Assault" involves a direct attack on enemy positions but does not specifically describe the act of concentrating fires to limit enemy capabilities. Hence, the term "suppress" most accurately describes the action in question.