Hat tip to Jason Bennion:

Swiss accidentally invade Liechtenstein

According to Swiss daily Blick, the 170 [Swiss] infantry soldiers wandered just over a mile across an unmarked border into the tiny principality [of Liechtenstein] early Thursday before realizing their mistake and turning back.

A spokesman for the Swiss army confirmed the story but said that there were unlikely to be any serious repercussions for the mistaken invasion.

Best. Headline. Ever.