The sad thing about pub or mess trivia nights is that they are often spoiled by some bloody know-it-all who reckons the quiz master has got it wrong.
Step forward me.
The question should read:
Which nation was responsible for inflicting the first defeats against the armies of
Germany and Japan in WW2?
Vichy France was not a signatory to the Tripartite Pact. Australian Army units did not engage units from Bulgaria, Hungary, Romania, Slovakia or the other associates/puppets given in
https://en.wikipedia.org/wiki/Axis_powers.
The battle of Bardia was 3-5 January 1941. The Greeks had already halted the Italian invasion in November 1940 and successfully counter-attacked on 9 November, see
https://en.wikipedia.org/wiki/Capture_of_Klisura_Pass.