Army OCS Call For Fire Practice Test

In a polar mission, the target location is calculated using bearing and range from the observer’s position, so the firing unit must know where the observer is. Transmitting your location before you initiate the call for fire gives the gun line a fixed reference to base the polar data on, ensuring an accurate and safe solution from the start. If you wait until after or during the call, or never transmit your location, the coordinates used to locate the target could be wrong, increasing the risk of a misfire or collateral damage. Therefore, you should share your position first, prior to starting the call for fire.