Do We Need More Armor, More Tanks, More Engineers?

Ukranian forces have not been advancing at the rate that you would expect a fully swept up, well trained and well led army to do. They are doing combined arms manoeuvre but it has only started ten days or so after they were rejected from the north. The Russian general who was put in overall command of russia's war effort seems to have given some time to reconstitute his formations. But he does seem to be trying to keep his boss quiet by saying, 'We'll roll straight into the dombas'