Republic of Ireland captain Robbie Keane has urged the squad to be a ‘united front’ as the Green Army looks to rescue their World Cup aspirations.
A 2-1 loss to Sweden at home left Ireland in fourth place, outside of automatic qualifying positions and the continental playoff spot.
Trapattoni’s men must now win at Austria, and at group leaders Germany to salvage their qualifying hopes.
The task may appear daunting, but Ireland have actually been better on the road than at the Aviva Stadium; they have yet to lose a match on foreign soil, while only collecting one win at home - against Faroe Islands.
Against Austria however, only a victory will help Ireland.
Knowing how serious the match at Ernst Happel Stadion, Captain Keane has told his fellow countrymen to fight not only for the 74-year-old Trapattoni, but "for everybody, it's for us as a country to be proud to wear that green jersey."
Meanwhile boss Trapattoni has made two changes to the squad that lost to Sweden.
Paul Green replaces the injured Glen Whelan in the centre of midfield, while Anthony Pilkington, who came on as a sub against Sweden, replaces James McClean on the left side of midfield.
Both Jon Walters (ankle) and Shane Long (dead leg) were able to shake off injuries and retain their positions in the starting eleven.