Is there a better way to block the AI's reinforcements?

[sunjin]

Hey guys.When I played the map: Panzer battle in snowfield. I found it very difficult to eliminate the Russian tanks in some villages. Their reinforcements ain't stop coming.OMG!

So I try to place the oil drums in a line to block the Russian's reinforcements in some places. In the far north or northwest area, I use the air supply to block their reinforcements.

If I got enough oil trucks, I would make use of them too. Remove the crew!

Many ppl got the same ideas as mine. Is it ridiculous or unfair?