"And the rocket's red glare..." is a famous line from The Star Spangled Banner. I think of rockets as a WWII invention. What did rocketry look like in 17th century warfare?

Spectacular. More can always be said, so if You the reader reading this right now, yes, YOU, know anything about rocketry in the period, this might be your chance to write up an answer for our enlightenment!

In the meantime, OP, I commend to your attention this thread from last month, where u/Bodark43 and u/wotan_weevil examine Congreve rockets (as used in the bombardment that The Star Spangled Banner is about) and their Chinese ancestors, respectively.