You have lost a base a few minutes ago and still have enough troops for a counterattack? THEN GO!!!
As you all know, the SAM takes a long time to expand, so if you've lost a base just a few minutes ago, it's relatively easy to regain it even with a wall and range extension! Even if the opponent already has 8-10 SAM, 25-50 howitzers can be enough to successfully shoot down the base! Therefore do not let yourself be intimidated, but start the counterattack! You never know if your opponent might have lost all his units in the previous battle AND because of the low SAM it is the best time to regain the base.