japanese air defense badge

Badge with the same design but from a different Corps https://asiamedals.info/threads/1934-kinki-air-defense-maneuvers-kitaura-air-defense-corps-branch-participation-commemorative-badge.25054/ Obverse Emblem of Chudai Air Defense Corps Branch with 中 in the center 中大 - Chūdai 防畿 - Defense...

1st variation. Obverse 防空 - Air Defense reverse 昭和十一年度阪神防空演習 - 1936 Hanshin Air Defense Maneuvers 済美朕合防護團参加記念章 - Saimi Air Raid Defense Corps Participation Сommemoration Badge

Obverse 防空 - Air Defense reverse 紀元二千五百九十四年 - 2594 = 1934 下山手分團 - Shimoyamate Bundan /[Air Raid Defense] Corps/

Badges with similar design were commissioned by Shitaya Ward Air Raid Defense Corps https://asiamedals.info/threads/shitaya-ward-badges-for-participants-of-air-defense-maneuvers-in-kanto.23247/ Size 26 x 34 mm. Reverse 昭和十一年七月 - July, 1936 三市聯合防空大演習 - Three Cities Joint Air Defense...

Obverse Army star inside Tokyo emblem. reverse 昭和十三年九月 - September 1938 記念章 - Commemorative Badge 澁谷區防護團 - Shibuya Ward Air Defense Corps 大向分團 - Ōmukai Branch

Specimen from the collection of Raymond LaBar. Photos courtesy of the owner. Suspension 昭和十一年十月度 - 1936 防空演習 - Air Defense Maneuvers obverse 浅草區防護團正徳分團 - Asakusa Ward (Tokyo) Air Defense Corps Shōtoku Branch 精勤章- Diligence/Good Attendance Badge

Specimen from the collection of Raymond LaBar. Photos courtesy of the owner. Obverse 防空 - Air Defense Osaka city emblem reverse 昭和十年十月 - October 1935 参加記念章 - Participation Commemorative Badge

Specimen from the collection of Raymond LaBar. Photos courtesy of the owner. Obverse 防名 - Nagoya City Defense (most likely 名 for 名古屋市 - Nagoya City) reverse 2597 = 1937 高須部隊 - Takasu Unit

Specimen from the collection of Raymond LaBar. Photos courtesy of the owner. Obverse 表彰 - Commendation; Award 青 for 青年団 - Youth League https://asiamedals.info/forums/youth-league-seinen-dan-badges.618/

Specimen from the collection of Raymond LaBar. Photos courtesy of the owner. It could also be related to Civil Defense Corps /Keibodan/ https://asiamedals.info/forums/keibodan-civil-defense-corps-badges.725/ Obverse 御視閲記念章 - Imperial Inspection Commemorative Badge reverse 昭和十七年十月 -...

Judging by yellow enameled star this is Keibodan-related badge https://asiamedals.info/forums/keibodan-civil-defense-corps-badges.725/ Obverse 防空 - Air defense 監視 - Surveillance

See also https://asiamedals.info/threads/1936-koishikawa-ward-air-defense-corps-merit-badge-1936.25954/ ; https://asiamedals.info/threads/koishikawa-ward-air-defense-corps-no-3-branch-5th-anniversary-commemorative-merit-badge.29314/. Specimen from the collection of Raymond LaBar. Photos...

Specimen from the collection of Raymond LaBar. Photos courtesy of the owner. Suspension 参加記念章 - Participation Commemorative Badge Nicely designed badge. reverse 防空演習 - Air Defense Maneuvres 参加記念 - Participation Commemorative 淀橋第五分團 - Yodobashi [ward, one of the 35 former wards of...

Specimen from the collection of Raymond LaBar. Photos courtesy of the owner. Obverse 防空 - Air Defense reverse 昭和十ー年九月 - September 1936 福島県防空大演習 - Fukushima Prefecture Air Defense Large Maneuvers 参加記念章 - Participation Commemorative Badge 平町青年團 - Tairamachi (town located in Meguro-ku...

Specimen from the collection of Raymond LaBar. Photos courtesy of the owner. Obverse 防 - Defense 神田 - Kanda (area in northeastern Chiyoda, Tokyo) 第三分團 - 3rd Branch reverse 参加記念章 - Participation Commemorative Badge 昭和十年七月 - July 1930

Specimen from the collection of Raymond LaBar. Photos courtesy of the owner. Obverse 表彰 - Commendation; Award reverse 昭和十二年度阪神防空演習 - 1937 Hanshin Air Defense Maneuvers 大阪市住吉防護分團 - Osaka City Sumiyoshi Ward Air Defense Corps

Specimen from the collection of Raymond LaBar. Photos courtesy of the owner. Obverse 防空 - Air Defense 清西班 - Seinishi Group

Obverse 防空 - Air Defense reverse 第六回関東 - 6th [Region] 防空演習参加章 - Air Defense Maneuvers Participation Badge 業平分團 - Narihira Air Defense Corps Branch 昭和十二年度 - 1937

Length 39.5 mm. Width 29.6 mm. Weight 18 g. Reverse 関東防空大演習 - Kanto Air Defense Maneuvers 日本橋區第一分團 - Nihonbashi Ward [Air Defense Corps] 1st Branch See also merit badge issued by the same branch https://asiamedals.info/threads/osawa-flag-store-tokyo.22329/

Obverse 功勞章 - Merit Badge reverse 足立區防護團 - Adachi Ward Air Defense Corps 第一分團 - 1st Branch