After emptying 1 magazine at pointblank range into the screaming attackers, he seized an enemy mortar dud and threw it back among the charging Japs, killing several as it burst. Securing a box of mortar shells, he extracted the safety pins, banged the bases upon a rock to arm them and proceeded alternately to hurl shells and fire his piece among the fanatical foe, finally forcing them to withdraw.

Fighting furiously against Japanese troops attacking with grenades and knee mortars from the reverse slope, he stood fearlessly erect in his exposed position to cover the hostile entrenchments and held the hill under savage fire for 15 minutes, killing 60 Japanese before his ammunition was exhausted and his platoon was able to join him.

Aware that leaving the position would sever contact with the 8,000 marines trapped at Yudam-ni and jeopardize their chances of joining the 3,000 more awaiting their arrival in Hagaru-ri for the continued drive to the sea, he chose to risk loss of his command rather than sacrifice more men if the enemy seized control and forced a renewed battle to regain the position, or abandon his many wounded who were unable to walk. Although severely wounded in the leg in the early morning of the 29th, Capt. Barber continued to maintain personal control, often moving up and down the lines on a stretcher to direct the defense and consistently encouraging and inspiring his men to supreme efforts despite the staggering opposition. Waging desperate battle throughout 5 days and 6 nights of repeated onslaughts launched by the fanatical aggressors, he and his heroic command accounted for approximately 1,000 enemy dead in this epic stand in bitter subzero weather, and when the company was relieved only 82 of his original 220 men were able to walk away from the position so valiantly defended against insuperable odds.

Exhausting his ammunition, he crawled under intense fire to his wounded team members and collected ammunition that they were unable to use. Far past the normal point of exhaustion, he held his position for 4 harrowing hours and through 3 assaults, annihilating the enemy as they approached and before they could get a foothold. As a result of his defense, the company position held until the arrival of a reinforcing platoon which counterattacked the enemy, now occupying foxholes to the left of S/Sgt. Stewart’s position. After the counterattack, his body was found in a shallow enemy hole where he had advanced in order to add his fire to that of the counterattacking platoon. Eight enemy dead were found around his immediate position, with evidence that 15 others had been dragged away.