Australia sent soldiers with machine guns against emus in 1932, and the emus won

When tens of thousands of emus trampled crops in Western Australia, the government sent a military detachment armed with Lewis guns to cull them. The birds scattered into small, fast groups that dodged the gunners; after a few weeks the army withdrew having killed only a few hundred of an estimated 20,000 emus.

— Australian War Memorial records, 1932, Emu War — Western Australia, November 1932