To signal an increase in speed to double time, what is the proper arm motion?

The proper arm motion to signal an increase in speed to double time is by thrusting the fist vertically several times. This gesture is universally recognized in military operations as an effective and clear way to communicate the command for troops to speed up their pace. The vertical thrust motion captures attention quickly and succinctly conveys urgency, ensuring that the soldiers understand the need for immediate action to increase their speed.

Visual clarity and decisiveness are crucial in signaling movements during operations, as the troops need to respond accurately and swiftly to maintain coordination and effectiveness. The chosen motion distinctly differentiates between varying speed commands, making it essential for maintaining operational momentum and readiness.