The Great Emu War was a military operation that took place in Australia in the 1920s, in which the Australian military attempted to control the population of emus, a large flightless bird, that were causing damage to crops in the area. The emus were causing significant damage to wheat fields and were difficult to control using traditional methods such as fencing.
The military was called in to deal with the problem and they used machine guns and other weapons to try and kill the emus. However, the emus proved to be surprisingly elusive and the war was ultimately considered a failure. The emus were able to outrun the soldiers and their weapons proved to be ineffective. The war was widely covered in the media at the time and has since become a humorous example of the difficulties of controlling wildlife populations.
It’s worth mentioning that the Great Emu War was not a long-term campaign, it was just a few weeks of operation and it was more of a publicity stunt than a serious military campaign. Despite the failure, it did bring attention to the problem of emus damaging crops and other ways were found to control their population.