Giant tortoises were decimated by pirates in the 18th and 19th century.

Native American populations were decimated.

David Lindenmayer, a professor of ecology at the Australian National University, says droughts and fires can decimate koala populations.

I must not stay to notice the strange fortunes of all the many other quasi-human worlds. I will mention only that in some, though civilization was destroyed in a succession of savage wars, the germ of recovery precariously survived. In one, the agonizing balance of the old and the new seemed to prolong itself indefinitely. In another, where science had advanced too far for the safety of an immature species, man accidentally blew up his planet and his race. In several, the dialectical process of history was broken short by invasion and conquest on the part of inhabitants of another planet. These and other disaster, to be described in due course, decimated the galactic population of worlds.

The soldiers decimated the unruly population.

Algeria's economy was decimated by the civil war of the 1990s.

And that’s why we need to follow through on our efforts to combat climate change. If we don't act boldly, the bill that could come due will be mass migrations, and cities submerged and nations displaced, and food supplies decimated, and conflicts born of despair.

The subsequent effects of the attack decimated the tourism industry there.

Our team will decimate yours on the field tomorrow.

Britain, the greatest empire the world has ever seen, decimated North America's and Australia's native populations.