What is the first command to get a unit from a regular formation to an extended formation?

The first command to transition a unit from a regular formation to an extended formation is to bring the unit to attention, which is indicated by the choice "Company, attention." This command ensures that all personnel are prepared to execute subsequent orders and are focused and disciplined. It sets the standard for readiness before executing any maneuvers that will alter the formation.

Starting with all members in a position of pause allows for better coordination as the next command to extend the formation can then be given, ensuring that each soldier is attentive and ready to respond. This command lays the groundwork for effective execution of formation changes that follow, such as "Extend to the left, March," which would typically be given after the unit is standing at attention.

Other options mentioned do not serve this preparatory purpose. For instance, executing a turn (like "Left face") or a movement ("Arms downward, move") do not achieve readiness and focus required for changing formations, making "Company, attention" the most appropriate first step.