By the late 18th century , it was regularly featured in public galleries at the Schleissheim Palace .
The Battle of Alexander at Issus remained part of the royal collection of the Dukes of Bavaria for centuries .
By the late 18th century , Battle of Alexander at Issus was regularly featured in public galleries at the Schleissheim Palace .
The Battle of Alexander at Issus remained part of the royal collection of the Dukes of Bavaria for centuries .