Wikipedia
The Limenitidinae ares a subfamily of butterflies that includes the admirals and relatives. The common names of many species and genera reference military ranks or – namely the Adoliadini – titles of nobility (e.g., count, duke, earl, and marquis), in reference to these butterflies' large size, bold patterns, and dashing flight. In particular, the light stripe running lengthwise across the wings of many Limenitidini has reminded earlier authors of officers' (e.g. admiral, commander, commodore) shoulder marks and epaulets.
In flight, many of these butterflies have the habit of flapping their wings, so the (usually) bright upperside and the cryptic underside alternate for the observer, then gliding for prolonged distances, with the motionless wings held outstretched. The common names of some Limenitidinae—" aeroplanes", " clippers", or " gliders"—refer to this flight pattern.