Answer : Hawkey's father practiced medicine in Crab Apple Cove, Hawkeye mentions in the episode where he turns his jeep over and is waiting with a Korean family for help to arrive that he had a thriving practice in Boston.
The actual Major Saito, unlike the character portrayed in the film by Sessue Hayakawa, was said by some to be one of the most reasonable and humane of all of the Japanese officers, usually willing to negotiate with the POWs in return for their labor. Such was the respect between Saito and the real-life Lieutenant-Colonel Toosey that Toosey spoke up on Saito's behalf at the war-crimes tribunal after the war, saving him from the gallows. Ten years after Toosey's 1975 death, Saito made a pilgrimage to England to visit his grave. .