If there was an error in the previous command, this is what you need to check against to find out about that.

"May I ask what was your previous command?"

If a command was not called, then the corresponding number of members in line will say the previous command.

It was a very bad time to recall that his previous largest command had been of a three-ship escort force.

But on her previous command, she wound up with her chief of security dead by unfortunate happenstance.

If there was an error in the previous command, it is checked against this.

Captain Morris, I understand you did very well with your previous command.

None of the previous commands had mentioned specifically that they should go to a mountain.

On any of his seven previous commands this would not have been remarkable.

They even list some officers who followed him to the Galtizh from his previous command.