15 March 44 BC The assassination of Julius Caesar took place on the Ides of March.
Assassination of Julius Caesar, article from Wikipedia     https://en.wikipedia.org/wiki/Assassination_of_Julius_Caesar

CROSSING THE RUBICON   Recording by Bob Dylan and many covers by others       https://www.youtube.com/results?search_query=crossing+the+rubicon+song
Crossing the Rubicon (song), article from Wikipedia https://en.wikipedia.org/wiki/Crossing_the_Rubicon_(song)