Which of the following is NOT a type of firing position in Marine operations?

The correct answer is strategic because it does not represent an officially recognized firing position in Marine operations. The types of firing positions used in military tactics include primary, supplementary, and alternate positions.

The primary position is the main location from which a Marine will engage the enemy. It is typically based on factors such as cover and line of sight. The supplementary position serves as a backup or additional location that can provide support or engage the enemy if the primary position becomes compromised. The alternate position is used when the primary position is no longer tenable or safe, allowing for a tactical retreat or repositioning without losing combat efficacy.

In contrast, the term strategic generally refers to broader planning and decision-making aspects of military operations rather than specific physical positions related to firing. Thus, strategic does not fit within the context of recognized firing positions in combat operations, making it the correct choice for this question.