True or False: Raising a fist to shoulder level and thrusting it in the desired direction indicates a hasty ambush left or right.

Raising a fist to shoulder level and thrusting it in the desired direction is a standard hand signal used in military operations to indicate the direction of a hasty ambush, whether left or right. This gesture clearly conveys the intention without the need for verbal communication, which is crucial in combat scenarios where silence or stealth is necessary. The simplicity and effectiveness of this signal allow troops to quickly understand the command and act swiftly, which enhances coordination and execution during an ambush. Hence, the assertion that this action indicates a hasty ambush in either direction is accurate.