About first name
The captain general becomes "総司令官" in Japanese though the meaning is a little different from "総督".
I think that there is the role of (the captain general/the commander-in-chief) at the time of the war in "総督".
Therefore how about the name called
"総司" which took initial 2 characters of the kanji of "総司令官" ?
A reading of is
(総司/soushi).
"総司" is the name of a famous samurai.
There was a samurai called
"沖田 総司/Okita soushi" in famous samurai group
"新撰組/Shinsengumi" of the
Meiji Restoration.
"沖田総司" is the samurai who appears in OVA of anime
"るろうに剣心/Rurouni Kenshin or Samurai X".
"沖田総司/Okita soushi" and
"新撰組/Shinsengumi" might be recorded in wiki.
If it is a well informed person about the history of Japan, it understands at once.Of course, all Japanese know.
"沖田総司/Okita soushi" and
"新撰組/Shinsengumi" are themes of the drama and the movie in frequent.
About middle name
How about the kanji called
"慈愛" ?
This kanji is a meaning of deep love that parents love child.
A reading of is
(慈愛/ziai).
About family name
I think it to be good in
"緑野".
I examined it in a family name dictionary and confirmed it.
It is a rare family name, but it is a family name to exist in Japan.
Names called
"緑野" are used for a name of a park and the land well.
A reading of is
(緑野/midorino).
緑野 総司(Midorino soushi)・ ・ ・ is a very cool name.
It is a name like a character appearing in an anime and manga.
The middle name was omitted.
How about you in this name?