Those Swiss!

MOST Swiss newspapers didn’t even bother to report that on March 1, 170 Swiss Army troops crossed the border into Liechtenstein.
Not that we see that many invasions here in the Alps, but it soon became clear that this was simply an error in orienteering. The incident occurred in bad weather and in the middle of the night, when Switzerland is hard to tell apart from its neighbors. “It was all so dark out there,” said one of the misdirected recruits.
The incursion caused no political stir, and was played down by the civil authorities as well as the army. Aristocratic titles may be forbidden in Switzerland, while the head of Liechtenstein is a hereditary monarch; and Liechtenstein does let people get behind the wheel who would classify as drunk in Switzerland. But there remain far more commonalities than differences between our two countries.

Invading Liechtenstein was admittedly a foolish thing to do, but at least the Swiss Army has shown it knows how to bring a failed military action to a happy conclusion. You just turn around and sneak back home as quickly and quietly as you can before anybody notices.
And the next day you call on the head of the foreign territory and offer a formal apology.