Fortified District

A Fortified District refers to the Japanese Army and (in certain cases) Japanese Navy defensive fortified organization, created in districts in Manchukuo, Chosen (Korea), Karafuto (Southern Sakhalin) and the Kurile Islands, i.e. on a front extended to over 6,000 kilometers.

The Japanese forces, had built 17 "fortified districts" and over 4,500 permanent emplacements along the USSR border. Other similar structures were constructed inland in these provinces. In similar form it organized other fortified districts inside of mainland Japan (coastal and inner mountainous areas) and overseas provinces (Formosa, Ryukyu, South Pacific Mandate, etc)

Such installations was constructed by defensive/offensive pourposes in defending frontier against foreign enemies in other frontier side by Japanese and Russians.also served how fixed heavy support at invasion force in enemy frontier side for your heavy special artillery,this as thought up by Japanese and used by Russians during August Storm operations during August 1945 when theirs open fire from heavy cannons in land and coastal Tochkas against Japanese forces.

Examples of special heavy Japanese fortified artillery:
*Type 94 37mm AT Gun
*Type 1 37mm AT Gun
*Type 1 47mm AT Gun
*Type 92 70mm Infantry Gun
*Type 98 20mm AA Machine Cannon
*Type 2 20mm AA Machine Cannon
*Type 4 20mm Twin AA Machine Cannon
*Type 11 75mm AA Gun
*Type 88 75mm AA Gun
*Type 4 75mm AA Gun
*Type 99 88mm AA Gun
*Type 14 10cm AA Gun
*Type 3 12cm AA Gun
*Type 5 15cm AA Gun (Kugayama Cannon)
*28cm Heavy Howitzer
*Type 38 15cm Howitzer
*Type 45 24cm Howitzer
*Type 45 15cm Cannon
*Type 7 30cm Howitzer
*Type 7 10cm Cannon
*Type 7 15cm Cannon
*Type 11 75mm Cannon
*Type 89 15cm Cannon
*Type 96 24cm Howitzer
*Type 96 15cm Cannon
*Experimental 41cm Howitzer
*Type 90 24cm Railway Gun (Futtsu Cannon)
*and other types of special heavy artillery

Examples remain in:

*Chosen Fortifications:
**Seishin fortified district (now Chongjin) with 4,000 officers and men, protected from the sea by heavy coastal artillery, an armored train, a regular train carrying combat equipment, and eight concrete fortifications and emplacements.
**Etetin fortified district (now Odetsin)
**Genzan fortified district (now Wonsan) with 6,238 Japanese officers and soldiers
**Rashin fortified district (now Najin)
**Yuki fortified district (called Unggi in Korean, now called Sonbong, or "Vanguard" in North Korea.)

*Manchoukouan Fortifications:
**Manchouli fortified district
**Kotou fortified district
**Fuyuan fortified district
**Sungari fortified district and Japanese Army Sungari Flotilla
**Hsinking fortified district/defense center
**Tuntsiang defense center
**Futsing fortified district with five permanent emplacements, a munitions depot and six mortar batteries.
**Sun’u fortified district with 20,000 Japanese officers and soldiers
**Sansing fortified district

*Kwantung Fortifications:
**Port Arthur fortified district (now Liaoshun)
**Dairen fortified district (now Dalian)

ee also

*Organization of Karafuto Fortress
*Organization of Kita and Minami Chisima Fortresses