The forgotten story of Andrew Jackson’s first military campaign in Asia. In the winter of 1832, a merchantman flying a Danish flag pulled into a port in Quallah Battoo in the Aceh Sultanate of what is now known as Indonesia. The vessel had set out from New York City half a year ago, had circumnavigated the Cape of Good Hope, and had finally arrived here. That the vessel was named for a river in America did not strike the locals as strange and when its officers left the ship after rubbing themselves with tar to look like disreputable sailors, claiming...