Can Lisa, the oldest recruit in the troop, adapt to army discipline? Chantelle, who's 22, returns to training for the second time, more determined than ever to make it through.
Five women have dropped out of 3 Section already and the tough stuff has only just started. Chloe and Jessica battle against injuries and physical challenges.
The troop face the final four weeks of training during which everything they've learnt will be put to the test on their longest and toughest exercise to date: Final Fling.