Today's award goes to the soldiers of Sweden's Life Regiment Hussars K 3. According to a Swedish news report:
A group of elite Swedish soldiers made a colossal error during a demolition exercise at the weekend when they blasted their way into the wrong house.
The incident took place during what was supposed to be a routine training operation, for a group of soldiers from Sweden's Life Regiment Hussars (K3), an elite cavalry division involved in intelligence and paratrooper training.
On its website, the Life Regiment Hussars characterize themselves as “light, highly mobile units with substantial strike power.”
Among other credentials, the Hussars also boast of having “long experience in the area of intelligence.”
But something nevertheless went wrong for the soldiers involved in an exercise which took place in Röjdåfors in northern Värmland in west central Sweden, near the Norwegian border, according to the Nya Wermlands-Tidningen (NWT).
The mission, performed in conjunction with the Swedish home guard (Hemvärnet), called for the soldiers to capture a house.
However, the elite unit somehow managed to hit the wrong target, and instead bombarded a house located about 200 metres from their intended target.
Collateral damage included blown out doors and window frames, before the soldiers discovered their mistake.
There's more at the link.
Now that's a monumental 'oops' in anyone's language! One hopes the owner wasn't at home at the time, or the troops would also face charges of practicing medicine without a license - in that they cured his non-existent constipation, at once and instanter!