The national [[aircraft]] marking of the [[poland|Polish]] Air Force, equivalent to [[roundel]]s. Adopted on 1 December 1918, it consists of four equal squares, of which the upper left and lower right are white, and the other two – red. These are surrounded by a border of inverted (counterchanged) colours 1/5 the thickness of a single square. In 1993 the colours were reversed (i.e. white in the upper left).

h1. See also
* [[World War II]]
** [[Battle of Britain]]
** [[Invasion Stripes]]
* [[Tag Group:Symbols]]
polish air force checkerboard