Loss in terms of money or efforts. Could be recent or ancient.
We’ll there was that time Kublai Khan tried to invade Japan with the largest amphibious assault in history (until D-day) and got absolutely wrecked by a typhoon.
Then tried again a few years later, with an even larger force, and got wrecked by another typhoon.
You can’t leave aside the fact that those typhoons were called “Divine Winds”, or kamikaze.
Their blunder was using disgruntled Chinese labor to build their ships. It turns out that conquering people makes them rather upset.