There are three formats commonly used in the US
-
Logical: Year - Month - Day
-
Civilian: Month - Day - Year
-
Military: Day - Month - Year
Apparantly it's even more complicated than I first presumed.
The format used in Europe is the US's military format.
At least we've made it easy for them, in case they decide to invade The Hague, because we sentenced an American for warcrimes.
(This is no joke. The USA have a 'law' that gives them the 'right' to do this!)