Precision bombing

Precision bombing refers to the attempted aerial bombing of a target with some degree of accuracy, with the aim of limiting collateral damage. An example would be destroying a single building in a built up area causing minimal damage to the surroundings. Precision bombing was initially tried by both the Allied and Central Powers during World War I, however it was found to be ineffective because the technology did not allow for sufficient accuracy. Therefore, the air forces turned to area bombardment, which inevitably brought about civilian casualties. "Precision bombing" was notably attempted by the United States Army Air Forces over Europe during World War II, as it was believed that heavy bombers could accurately bomb targets from high altitude using the Norden bombsight. Since then, the development and adoption of guided munitions has greatly increased the accuracy of aerial bombing. Because the accuracy achieved in bombing is dependent on the available technology, the "precision" of precision bombing is relative to the time period.

Precision has always been recognized as an important attribute of weapon development. The noted military theorist, strategist, and historian Major-General J. F. C. Fuller, considered "accuracy of aim" one of the five recognizable attributes of weaponry, together with range of action, striking power, volume of fire, and portability.

In the early days of World War II, bombers were expected to strike by daylight and deliver accurately in order to avoid civilian casualties. Cloud cover and industrial haze frequently obscured targets so bomb release was made by dead reckoning from the last navigational "fix"—the bombers dropping their loads according to the ETA for the target. All airforces soon found that daylight bombing resulted in heavy losses since fighter interception became easy and switched to night bombing. This allowed the bombers a better chance of survival, but made it much harder to even find the general area of the target, let alone drop bombs precisely.

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