Germany's head coach Joachim Loew at a news conference.
The reigning World Cup champions are without the likes of Toni Kroos, Manuel Neuer and Thomas Muller for the tournament in Russia Russia, with Low experimenting to find a team for the future.
Germany's Julian Draxler, right, fight an aerial duel wit two Australian players during the Confederations Cup, Group B soccer match between Australia and Germany, at the Fisht Stadium in Sochi, Russia, Monday, June 19, .
On the back of his breakthrough season with RB Leipzig, striker Timo Werner, 21, expects a fiery start in Sochi for the untested, green Germans.
"We know the issues we have are not massive". Meanwhile, the hope is that players such as Tom Rogic and Trent Sainsbury will step up to try and shock the world - or at least the Germans on Monday. "As much as you try and set up the team to be courageous in terms of where we want to defend, it's human nature to pull back and sit deeper than you'd like".
"We lost the thread; we didn't manage the lead well", Low said.
Germany almost settled the game when Timo Werner hit the post late on, but the world champions would cling on to secure a 3-2 win.
"At the last World Cup in Brazil I got to play and witness an exceptional young bunch of players outplay some of the best teams in the world for big parts of the games".
"Robbie Kruse or Mathew Leckie are really fast players and we know them from the Bundesliga".
It's 3am, the sun is up, but we've made it to St Petersburg!
But Australia can take heart knowing that they pushed the world champions, who had outscored opponents 27-1 since the previous time they allowed two goals in a game, a 2-0 defeat to France at Euro 2016.
"The only way you can [improve] is to keep exposing them to this level", he said.
"We had a good opportunity to win the game, in the end they were the better team, scoring three goals".
So it's back to school for the Socceroos, many of whom have never faced an African nation.
Cahill - Australia's all-time leading scorer - had little time to influence the contest with Germany, thrown into the fray in the 86th minute.
The world champions, despite fielding a youthful, experimental side, were rampant in the opening period, with Postecoglou admitting his side were lucky to only be trailing 2-1 at the interval.
The Socceroos are licking wounds, icing sore muscles and hitting the books ahead of a must-win Confederations Cup match with Cameroon.
"It's a great test for us, but I am not buying into the idea we are playing a weakened team - I think that's a bit of a myth".
The ex-Everton midfielder, 37, is just three short of winning his 100th cap - a milestone he could reach in the three Group B games against Germany, Cameroon and Chile.