So with those massive military convoys heading towards the major cities of Ukraine, this is where the fun begins.
The Russians have a historical trend that goes something like this:
Step 1: Send forces Ad Hoc into the city to try to take it "on the march."
Step 2: If the above fails, encircle the city and then send a heavy force into the city to "blitz" the defenses and take the city without too much damage.
Step 3: If the above meets dug in resistance, blow the city to shit with heavy artillery, direct fire support, and air support. Then attempt to re-enter the city in force.
Step 4: Repeat step 3 as necessary.
They scale this down as necessary. Take everything but a few city blocks very quickly on the march? Blow that city block apart and try again. Got a single building giving trouble? Don't send in infantry to dig them out, hit it with a few thermobarics.
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Hey now. We never signed onto that.