Sentence:  Like lines of perspective or the beams of searchlights at Nazi Party rallies that shone into the night sky where they met in an infinitely distant beyond, the arms and hands of those giving each other the Hitler <WSD>salute</WSD> forever approached each other but never joined. 
Meaning of the word marked with <WSD> tags:  A formal gesture made in honor of someone or something, usually with the hand or hands in one of various particular positions.