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Guarding the Borders of Japan: Occupation, Korean War and Frontier Controls

Published online by Cambridge University Press:  07 May 2025

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Around 10pm on 5 October 1948 a small boat made its way along the coastline of Cape Sada Peninsula, the long finger of land that juts west from Ehime Prefecture on the Japanese island of Shikoku. The darkness was intense. It was a moonless autumn night, and the forested spine of hills above the jagged cliffs of the peninsula was devoid of lights.

The boat – a 20-ton wooden vessel called the Hatsushima – had left the heavy swell of the open ocean and now moved slowly and quietly through the calmer waters of the Uwa Sea. No doubt the captain believed that his craft's progress along this remote stretch of Shikoku coastline was unobserved. In the little fishing villages which dotted its rocky inlets the working day began and ended early, and most of the villagers were already asleep. But from the hills above, eyes were watching.

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References

Notes

1 “CSDIC Translations BOl Entry intoū, held in the Australian War Memorial, Canberra, file no. AWM 144, 417/1/27, p. 11.

2 Ehime Ken, Ehime Ken Shi Gaisetsu, vol. 2, Matsuyama, Ehime Ken, 1960, p. 2.

3 Ibid., p. 540-541.

4 Interview with O. Y., former undocumented migrant to Japan, Tokyo, 12 January 2007.

5 Hōmushō Nyûkoku Kanrikyoku ed., Shutsunyûkoku Kanri to sono Jittai – Shōwa 39-nen, Tokyo, Ōkurashō Insatsukyoku, 1964, p. 16.

6 Ibid.

7 See for example Asahi Shimbun, 5 January 2007.

8 Identifying place names in Occupation period documents is sometimes a difficult task. Korean place names have generally been transcribed by Japanese officials, who give the Japanese (rather than the Korean) pronunciation of the characters which make up the place name. These names have then been transcribed (sometimes inaccurately) into the Roman alphabet, adding a further layer of complexity to the process.

9 Tessa Morris-Suzuki, Borderline Japan: Foreigners and Frontier Controls in the Postwar Era, Cambridge, Cambridge University Press, 2010.

10 “CSDIC Translations BCOF – Illegal Entry into Japan 1948” op.cit., p. 5.

11 Ibid., pp. 23-27.

12 Ibid., p. 14.

13 John Dower, Embracing Defeat: Japan in the Wake of World War II, New York, W. W. Norton, 1999, p. 101.

14 “CSDIC Translations BCOF – Illegal Entry into Japan 1948”op.cit., p. 27.

15 Ibid, p. 26

16 Kim Tae-Gi, Sengo Nihon Seiji to Zainichi Chōsenjin Mondai: SCAP no Tai-Zainichi Chōsenjin Seisaku 1945-1952, Tokyo, Keisō Shobō, 1997, pp. 134-135.

17 Lori Watt, When Empire Comes Home: Repatriation and Reintegration in Postwar Japan, Cambridge Mass., Harvard East Asian Monographs, 2009, pp. 92-93.

18 Dower op.cit., p. 54.

19 Watt, When Empire Comes Home, p. 195.

20 “Korean Minority Problems in Japan (from US Intelligence Agencies)” in BCOF Quarterly Occupation Intelligence Review no. 2 (secret), August 1948, in file “Intelligence Reports, Quarterly Occupation Intelligence Review”, series no. 1838/283 control symbol 481/1/6, held in Australian National Archives, Canberra.

21 Ōnuma Yasuaki, Tan'itsu Minzoku Shakai no Shinwa o Koete: Zainichi Kankoku- Chōsenjin to Shutsunyûkoku Kanri Taisei, Tokyo, Tōshindō, 1986, p. 38; see also Hōmushō Nyûkoku Kanrikyoku ed., Shutsunyûkoku Kanri to sono Jittai – Shōwa 39-nen, Tokyo, Ōkurashō Insatsukyoku, 1964, p. 14.

22 Hōmu Kenshûjo, Zainichi Chōsenjin shogû no suii to genjō, Tokyo, Kohokusha, 1975, p. 59.

23 Hōmushō Nyûkoku Kanrikyoku op.cit., p. 14.

24 2 NZEF (Japan) Op. Report no. 2, 5 April to 12 April 46, in Archives of New Zealand, Wellington, file. ref. no. WA J 6815 6512, “Operation Reports – Mar. 46 – Mar. 47”.

25 Memo from R.L. Eichelberger, “Suppression of Illegal Entry of Korean Immigrants to Japan”, 10 August 1946, held in Australian War Memorial, Canberra, file no. AWM 114/1/27, “Illegal Entry of Koreans into Japan”.

26 “Report on Stowaways”, attached to the memo “Korean Stowaways in Japan” from Lt. Col. Rue S. Link, Kyushu Military Government Headquarters, Fukuoka, to Commanding General, I Corps, APO 301, 19 August 1946; in GHQ/SCAP Records RG 331, Box no. 385, Folder no. 014, “Civil Matters, Binder #1, 2 January 1946 thru 19 January 1948 (Japan, Korea, Miscellaneous), p. 1.

27 Ibid., p. 1

28 Ibid, p. 2

29 Richard Hanks Mitchell, The Korean Minority in Japan, unpublished PhD thesis, University of Wisconsin, 1963, p. 161.

30 “CSDIC Translations BCOF – Illegal Entry into Japan 1948”op.cit., p. 17; on the problems of repatriation, see also Mark E. Caprio and Yu Jia “Legacies of Empire and Occupation: The Making of the Korean Diaspora in Japan”, The Asia-Pacific Journal: Japan Focus, vol. 37-3-09, September 14, 2009.

31 Kim Tae-Gi op.cit., pp. 262-263.

32 Heo Yeonson, Cheju Yonsan, Seoul, Minshuka Undō Kinen Jigyōkai, p. 28; see also Hyun Moo-Am, “Mikkō, Ōmura Shûyōjo, Chejudō: Ōsaka to Chejudō o Musubu ‘Mikkō ‘no Nettowâku”, Gendai Shisō, vol.35, no. 7., June 2007, pp. 158-173, particularly p. 165.

33 Heo op.cit., p. 30.

34 See Moon Gyeong-Su, Chejudō Gendaishi, Tokyo, Shinkansha, 2005, p. 25.

35 “CSDIC Translations BCOF – Illegal Entry into Japan 1948”op.cit., p. 15.

36 Moon op.cit., pp. 34-35.

37 Ibid., pp. 38-41.

38 Heo op.cit., p. 41.

39 See memo by D. W. Kermode, “Korean ‘Independence Day’ Disturbances – Statement by Director of Police Dpeartment to M. Kermode and Mr. Bevin (received 28th April”, 28 April 1947, in Australian National Archives, Canberra, series no. A1838, control symbol 506/1, “Quelpart Island – Cheju Province”.

40 See memo by D. W. Kermode, “Korean ‘Independence Day’ Disturbances”, 24 April 1947, in Australian National Archives, Canberra, series no. A1838, control symbol 506/1, “Quelpart Island – Cheju Province”; also Heo op.cit., pp. 45-57.

41 Heo op.cit., p. 59; see also “CSDIC Translations BCOF – Illegal Entry into Japan 1948”op.cit., p. 23.

42 “Report of the Work of the United Nations Temporary Commission on Korea”, by S. N. Jackson, Australian Delegate, August 1948, held in Australian National Archives, Canberra, series no A1838, control symbol 852/20/4 Part 3, “Korean Commission”, 1948.

43 Confidential dispatch no. 107/1948 from Australian Mission in Japan, 19 May 1948, in in Australian National Archives, Canberra, series no A1838, control symbol 852/20/4 Part 4, “Korean Commission”, 1948.

44 Confidential dispatch no. KJ17, from the Australian Representative, United Nations Temporary Commission on Korea, 19 April 1948, in Australian National Archives, Canberra, series no A1838, control symbol 852/20/4 Part 4, “Korean Commission”, 1948.

45 United Nations Temporary Commission on Korea, “Elections of 10 May 1948 – Resolution Adopted at the Sixty-Ninth Meeting, 25 June 1948”, in Australian National Archives, Canberra, series no A1838, control symbol 852/20/4 Part 4, “Korean Commission”, 1948.

46 “CSDIC Translations BCOF – Illegal Entry into Japan 1948”op.cit., p. 11.

47 Departmental dispatch no. 230/1948 from Australian Mission in Japan to Department of External Affairs, Canberra, “US Intelligence Information on Korea”, in Australian National Archives, Canberra, series no. A1838, control symbol 852/20/4 Part 5, “Korean Commission”, 1948.

48 See “Precautions against Illegal Entry of Koreans”, 26 June 1950, and “No Official Japanese Statement on Korea”, 26 June 1950, wire reports held in National Archives of Australia (NAA), Canberra, series no A 1838, control symbol 3123/7/27, “Korean War – Japan – Policy”, 1950-1953.

49 Departmental Dispatch no. 74/1950, “Disturbances in Japan Created by Koreans”, in NAA, series no. A1838, control symbol 3127/7/27 op.cit.

50 “Move to Deport Koreans from Japan”, 27 December 1951, wire report in NAA, series no. A1838, control symbol 3127/7/27 op.cit.

51 Legal Section Memorandum for Chief of Staff, “Deportation of Subversive Aliens”, 17 July 1951, in GHQ/SCAP Records, Box no. LS-1, folder no. 3, “Top Secret File no. 3”, Jan. 1950-Nov. 1951, held in National Diet Library, Tokyo, microfiche no. TS 00327-00329, p. 5. Interestingly, the Legal Section argued that in terms of international law the Alien Registration Ordinance (discussed below) which SCAP itself had proposed, and which was applied to Koreans, did not and could not alter the Japanese nationality of Koreans in Japan; Memorandum from Legal Section to Chief of Staff, “Deportation of Subversive Aliens”, op.cit. p. 6.

52 Memorandum from Legal Section to Chief of Staff, “Deportation of Subversive Aliens”, op.cit., p. 1.

53 See Watt, When Empire Comes Home, op.cit., p. 95.

54 Kim op.cit., p. 263.

55 “CSDIC Translations BCOF – Illegal Entry into Japan 1948”op.cit., p. 46.

56 Memo from Lt. Col., Military Government Liaison Section, to HQ BCOF 29 July 1946. See also Tessa Morris-Suzuki, “An Act Prejudicial to the Occupations Forces: Migration Controls and Korean Residents in Post-Surrender Japan”, Japanese Studies, vol. 24, no. 1, May 2004, pp. 4-28.

57 Imperial Ordinance no. 207 of May 2, 1947, ‘Ordinance for Registration of Aliens’, in GHQ-SCAP Records, Box 2198, folder 16, ‘Immigration’ Feb. 1950-Mar. 1952, microfilm held in National Diet Library, Tokyo, fiche no. GS(B)-01603.

58 Ibid.

59 Eiji Takemae, Inside GHQ: The Allied Occupation of Japan and its Legacy (trans. Robert Ricketts and S. Swann) (London, Continuum, 2002) p. 451.

60 See for example Brindiv Fortnightly Intelligence Review for fortnight ending 21 January 1946, part 2, p. 2, held in Australian War Memorial, file no. AWM 114, 423/10/63.

61 See for example Nishimura Hideki, Ōsaka de Tatakatta Chōsen Sensō: Suita Hirakata Jiken no Seishun Gunzō, Tokyo, Iwanami Shoten, 2004.

62 See Morris-Suzuki, Borderline Japan, op.cit., pp. 103-105.

63 Nicholas Collaer, as told to James Neville Miller, “10,000 Miles of Trouble”, Mechanix Illustrated, September 1949, pp. 62-65, quotations from pp. 64 and 75.

64 Memorandum from Legal Section to Chief of Staff, “Deportation of Subversive Aliens”, op.cit. p. 13.

65 Memorandum from the Military Intelligence Section, General Staff to Cief of Staff, “Sentence of Deportation by Occupation Court in Spy Ring Trial”, in GHQ/SCAP Records, Box no. LS-1, folder no. 3, “Top Secret File no. 3”, Jan. 1950-Nov. 1951, held in National Diet Library, Tokyo, microfiche no. TS 00327-00329.

66 Memorandum from Legal Section to Chief of Staff, “Deportation of Subversive Aliens”, op.cit. p. 10.

67 This ordinance was renamed the Migration Control Law after the end of the Allied occupation in 1952.

68 Quoted in ibid., p. 207; see also debate of the Lower House of the Japanese Diet, 28 April, 1952, in Parliament of Japan, Kokkai Kaigiroku Kensaku Shisutemu, (accessed 4 January 2008)

69 See Tessa Morris-Suzuki, Exodus to North Korea: Shadows from Japan's Cold War, Lanham NJ, Rowman and Littlefield, 2007; also Morris-Suzuki, Borderline Japan, op. cit., pp. 197-222.

70 Heo, Cheju Yonsan, op.cit., p. 123.