First??? Didn’t the shuttles take off all the time with used RS-25 rocket engines, and they recovered the SRB’s and reused them as well.
If you want to get technical about it, the Shuttle fuel tank was destroyed after every launch.
Yes, plus Blue Origin’s New Shepherd rocket has flown five consecutive times. Still, this is an impressive achievement, and is the last step to dramatically lowering the cost of space flight.