Eventually, the Russians brought in more infantry for a house-to-house advance through the city with dismounted Russian infantry supporting armor. The Russians established ambush points, then moved armor toward the Chechens to lure the Chechens into ambushes. Similar to Soviet tank crews in the Battle in Berlin in 1945, some of the Russian armor were fitted with 'field-expedient' cages of wire-mesh mounted about 30-centimetres from the hull armor in an attempt to defeat the shaped charges of the Chechen RPGs.