The reason I ask the question in the previous post is that I have looked in the editor and there is no TF commander named Yamamoto (Isoroku or anyone else) who appears in 1943.
In stock scenario 1 -
There are 17 leaders named Yamamoto. Relevantly, there is one Admiral Yamamoto, Isoroku and he is nation 02 (IJN) and type 01 (HQ). he should not, in the ordinary course of events, be available for TF command at any time. (Leader slot 6817.)
There is also a Rear Admiral Chikao Yamamoto, who is also an IJN HQ admiral. (Leader slot 6818.)
There is a vice admiral named "Yamamoto, K.", also an HQ leader, with a delay of 9999. So he may appear in an HQ that turns up (if so assigned in the scenario) or not at all. (Leader slot 6819.)
Then there is Yamamoto, R. He is a ship's captain. He could be a surface TF leader by default in that berth. (Naval - 69/air -24) However, he is available 411206, not 1943. (Leader slot 6820.)
There is a Yamamoto, I., who is a Commander and an 05 ship captain (smaller ship). (Leader slot 6821.)
Yamamoto, S., is an air unit leader (Leader slot 6822). He has a non-identical twin brother (slightly different ratings). (Leader slot 6823.)
Finally, there is a Yamamoto, Hideo, a ship's captain type 05 rank LCmdr (leader slot 6589.)
I also searched 'Isoroku' in case there was a TF commander with the name listed cart before horse. No result.
"You may find that having is not so nearly pleasing a thing as wanting. It is not logical, but it is often true."
- Cdr Spock