In Avengers: Endgame the Avengers attack Thanos in his garden on Titan II. Captain Marvel points out that the planet has no defences, no radar, no tracking systems, no armies and seems to be totally unguarded. When they find Thanos they discover that
he has already destroyed the Infinity Stones
some two days previously.
Before this happened, was Titan II as vulnerable as it was when the Avengers turned up? The Avengers are only able to track Thanos due to
the energy surge caused by destroying the Stones.
But, theoretically, if they'd found him before this then would the planet have been in the same state? In other words, did Thanos have all his minions and soldiers around him but just sent them away two days before the Avengers arrived? Was there defensive military hardware which was subsequently dismantled? Or was he on his own the whole time?