 In 1935-1936 the Imperial Japanese Navy, established the Kisarazu Air Field for the Kisarazu Air Group on landfill in the northern part of Kisarazu to protect Tokyo from attack.The base served as an arsenal for the IJN, and employed up to 17,000 workers during the war.It was this site that received the remains of Admiral Isoroku Yamamoto after being transported back to Japan aboard Musashi.