As an observer, which of the five requirements for achieving accurate first-round fire for effect are you solely responsible for?

The responsibility of the observer in achieving accurate first-round fire for effect primarily revolves around the accurate target location and size. The observer must precisely identify and communicate the target's position, including its coordinates and dimensions, to ensure that the artillery can effectively engage the target without causing collateral damage. This role is crucial because even slight inaccuracies in targeting can lead to ineffective fire support and potentially endanger friendly forces or non-combatants in the vicinity.

Accurate target location and size are essential because they provide the firing unit with the necessary details to aim and fire on the correct spot. The observer's knowledge and expertise in identifying these aspects directly influence the success of the mission. If the target is incorrectly located, or if its size is miscommunicated, it could result in a missed target or insufficient firepower on a larger target, thereby failing to achieve the desired tactical effect.

While aspects such as the location of the firing unit, computational procedures, and meteorological information are important for overall fire support accuracy, they do not fall under the sole purview of the observer. Each of these elements often involves other personnel or systems within the unit to ensure the artillery's response is effective and accurate.