It wasn't a retreat, it was a rout (there is plenty of video of this) with also a large prisoner haul (Russian channels talk about over 500 POW so far, and there are certainly a lot of videos of that too).

If the order to retreat could have been issued a few days earlier order could have probably been maintained and men's lives saved. One thing that has consistently struck me about this war of attrition is how careful the larger power is with their soldiers lives, and how careless the smaller power is with theirs. It's exactly the reverse of what you'd expect.