General Of The Army
Marshal, Admiral
The commander's origin was as the general of the army. He stepped down, but that's where he started. Maybe he's working the system backwards...
げんすい
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
これが、あの有名な最高司令官のマッカ—サ—元帥です。
That’s famous supreme commander, General MacArthur.