Lichtenstein about 2 months ago, completely by accident. They were on excercise and just wandered a couple of miles over the border before they noticed. Not so bad, but they'd only have had to go another couple of miles to invade Austria as well, all in one afternoon :o)
(Pan Dimensional MouseCurrently existing in 13 dimensions as of,
Fri 27 Jul 2007, 23:30,
archived)
We invaded Spain by accident last year
landed on a beach we thought was Gibralter and established a beach head.
jockeys turned up at La Linea in 2004 some time. Thick cunts. This is why I endorse warfare from 5 miles away, at least if you miss you only kill foreigners and after all, its five fucking miles away officer!
(Pasanonic's been known to cause insanity in laboratory mice,
Fri 27 Jul 2007, 23:54,
archived)