Russia Today has a story looking back at the history of the Soyuz-U rocket, on the occasion of its final launch. According to the story, the Soyuz-U has flown either 788 or 789 times, the first mission taking place in 1973 when it was used to loft "a Soviet military surveillance satellite" and the most recent carrying
[...] the Progress MS-05, a freighter carrying 2.5 tons of miscellaneous cargo – fuel, food, water, sanitation, oxygen and air, as well as spare parts, supplies and experiment hardware – to the International Space Station (ISS).
The story calls it "the longest-serving rocket in history."
Additional coverage:
(Score: 2) by KilroySmith on Thursday February 23 2017, @07:46PM
Or, it's like, you know, quoting from the story?
I know that's an archaic use for quotation marks from the time before they became used as an accusatory finger, but a literate person such as yourself should be expected to know such things.