The first attack against this building came at 6.30 a.m., barely an hour before the Yorke Bay amphibious landing, when one of Giachino's squads, led by Lieutenant Gustavo Adolfo Lugo, started to exchange fire with the British troops inside the house. At the same time, Giachino himself, with four of his subordinates, entered the servants' annex, believing it to be the rear entrance to the residence. Four Royal Marines, Corporals Mick Sellen and Colin Jones and Marines Harry Dorey and Murray Paterson, who were placed to cover the annex, beat off the first attack. Giachino was hit instantly as he burst through the door, while Lieutenant Diego Garcia Quiroga was shot in the arm. The remaining three retreated to the maid's quarters.