How many subordinate units does a Group contain?

A Group in the context of the military organizational structure is designed to contain a minimum of two subordinate units. This definition aligns with the basic principles of military organization where Groups are typically structured to have multiple components that work together towards common operational goals. The presence of at least two subordinate units allows for greater functional diversity and operational capacity, enabling the Group to effectively carry out missions and tasks.

While one subordinate unit may suffice for certain organizational levels, a Group's efficacy and ability to fulfill its duties are enhanced by having at least two units, facilitating teamwork and the distribution of responsibilities. The other options imply a higher requirement, which is not necessary for defining the minimum structure of a Group within the military. Thus, the correct understanding is that a Group must contain no fewer than two subordinate units.