A Russian officer is nothing near in comparison with Western militaries. They have no corporals. A lieutenant probably leads a group of 20 soldiers or even a captain. Generals leading battalions. They also don't have any further training in tactics of strategy because they simply have to follow the orders given to them. It's a mess.Far harder to replace as well. You can train a new private soldier in a few weeks (or days if you are Putin...) but officers and NCOs take much longer and the experience they have effectively takes years to acquire.