Hey @JeremyECrawford does Action Surge cost a bonus action to use? I can't seem to understand the wording with possible bonus action.
— ch8246 (@6241a9bff340461) February 27, 2018
Action Surge doesn't cost a bonus action to use. #DnD https://t.co/LfLfWRBIt0
— Jeremy Crawford (@JeremyECrawford) February 27, 2018
The “with possible bonus action” means you can still take your bonus action, if you have one, after using Action Surge.