[dragonwriter]

There are some cases where that is true, there are some cases where Ukraine got the same stuff that is current with the US, and there are cases where Ukraine was literally the first user of new tech (the GLSDB, for instance.)

One reason for this mix is that the Russo-Ukrainian war has defied some US expectations of what future wars it might need to deal with might look like, making previously-retired equipment relevant again (the drone war has made a lot of retired anti-aircraft tech more relevant, because relative cheap short-range missiles and short range anti-aircraft guns are a lot more useful against drones than they are against modern fighters, for instance) and, in other cases driving new weapons development.