Rubowitz was a member of the underground militant group Lehi (the Stern Gang) who disappeared from Rehavia in Jerusalem while carrying propaganda and became a Zionist martyr. Part of Brit Hashmonaim, a religious youth group and Lehi front, he distributed weapons to help drive out the British. It is believed that a British soldier abducted Rubowitz and killed him while trying to beat information out of him.
Photo: A “missing” poster for Alexander Rubowitz, public domain