During a combat course, Erin lagged behind the rest of the group, the rest of the team lapped her and while she attempted to drag herself through the mud and ice cold water, she was made to feel terrible as the DS punished her teammates for her inability to finish the course.
The other recruits were forced to hold 20kg sandbags over their heads which made Erin feel so guilty she withdrew.
"You're f**king selfish!" Ant Middleton yelled at her as she attempted to get through another lap.
Sabrina Frederick was suffering under the weight of the 20kg bag after injuring her back the previous week.
"My back! My back!" she cried out in pain.
"If you’re gonna whine I suggest you hand me your number! Gimme your number!" Ant told her.
Erin refused to tap out, so Ant made her hold a sandbag over her head as well and made the other recruits do the course again with their sandbags.
"They are suffering because of you!" the soldier screamed in her face.
Finally she gave in and handed in her number, but while the DS may have called her "selfish", the viewers at home took to Twitter to share their respect for Erin.
"@Erin_McNaught is bloody unbelievable," one viewer wrote. "Such a strong effort. No shame. Legend. Respect."
"@Erin_McNaught proved absolutely everyone wrong this series!" another wrote. "If it was based on determination and grit she would of won."
"Take a bow, Erin," someone else added. "Truly epic effort and achievement."
"If you're not a Erin Mcnaught Stan after this show then I have no idea what it'll take," another fan wrote.
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