Identifying them as British, GADA 601 section engaged them in direct-fire mode. The 35 mm bursts blocked the advance of the leading companies of the 2nd PARA Regiment, who suffered a number of casualties. C Company bore the brunt of the Argentine fire, the Headquarters section of C Company was effectively put out of action and 20% of the Company were injured, including the commander, Major Roger Jenner, and his signallers. The rear platoon, attached from A Company, was forced to remain behind Darwin Hill for the rest of the battle. The last direct-fire mission of GADA 601’s section targeted the Darwin school-house, a position recently taken by troops of D Company. The building was already on fire due to the use of white phosphorus grenades by the British, it was then systematically destroyed by 35 mm rounds and burnt to the ground, resulting in further casualties for the paratroopers. The British advance from this area was eventually halted on the orders of Major Chris Keeble who decided to stop the advance in order to consolidate his position. Shortly after, the GADA position was subjected to mortar fire, and the power generator of the guns was damaged beyond repair. A later Harrier strike was inaccurate and failed to hit the GADA 601 position, as corroborated by a British account of the action. The mortar barrage, however, forced the section to seek shelter. With the garrison now isolated and surrounded, the Argentine commanding officer chose to surrender the following day.