[soperj]

Literally the only condition was that the emperor was preserved.

[Aeolun]

I think that was the condition they tacked onto the unconditional surrender xD

I imagine there were more before that.

[soperj]

The last conditional surrender before atom bombs were dropped on Hiroshima and Nagasaki, that was the only condition. There were previous conditional surrenders. They wanted to drop those bombs though.

[FredPret]

And conquests retained