the heaviest soviet attack took place on 29 july. by noon, the red army had almost seized control of the tannenberg line. the last reserve on the front, i.battalion, 1st estonian regiment had been spared from the previous counterattacks. the scarcity of able-bodied men forced "sturmbannführer" paul maitla to request reinforcements from patients in the field hospital. twenty injured men responded, joining the remmnants of other units including a part of the kriegsmarine and supported by the single remaining panther tank. the counterattack started from the parish cemetery south of the tornimägi with the left flank of the assault clearing the hill of soviet soldiers. the attack continued towards the summit under heavy soviet artillery and bomber attack, culminating in close combat on the soviet positions. the estonian troops moved into the trenches. running out of ammunition, they used soviet grenades and automatic weapons taken from the fallen. according to some veterans, it appeared that low-flying soviet bombers were attempting to hit every individual estonian soldier moving between craters, some of them getting buried under soil from the explosions of soviet shells. the soviets were forced to retreat from the grenaderimägi hill.