Ukraine war tactics, artillery

The best argument I've seen for why the US should stay in the Ukraine ear: to use up Russia's ammunition (they have limited industrial capacity to replace it).

https://www.reddit.com/r/WarCollege/comments/13r6kms/demystifying_the_myth_of_russian_artillery_power/

See also 

https://www.rusi.org/explore-our-research/publications/special-resources/meatgrinder-russian-tactics-second-year-its-invasion-ukraine