The international military tribunal for the for far east?

I would say the Pacific and East Asia, but others would have different names, most probably the Pacific, regarding it as a single theater of war.

The war criminals were in the Pacific Ocean and the seas around the South Pacific and Australia and China.

military run court

The Far East is a place in Asia.

It has advanced quite a lot, from the propeller driven planes in WWII to the modern jet engine fighters York flies.