A salute is read as respect, discipline and recognising someone’s rank or sacrifice. In dreams it can stand for honour given or received, or for following rules you did not choose.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.