Use of whistle in addition to hand signal during combat manuever?

Using a whistle in addition to hand signals during combat maneuvers enhances communication and coordination among troops. The auditory cue of a whistle can be heard over the noise of gunfire and explosions, ensuring that commands are received even in chaotic environments. This dual approach helps to reduce miscommunication and allows for quicker responses to changing situations. Overall, it increases the effectiveness and safety of the unit during operations.