GHQ Sword Confiscation: The Postwar Crisis and Fight to Preserve Japanese Swords

On August 15, Showa 20 (1945), Japan's defeat was announced through the Imperial Rescript on the Termination of the War broadcast by the Showa Emperor. The General Headquarters of the Allied Powers (GHQ) began disarmament and weapons confiscation throughout Japan starting the following month, and Japanese swords were also made subject to confiscation alongside firearms and artillery. This order posed a fundamental threat to the heritage of Japanese sword culture spanning several centuries, becoming one of the greatest crises in cultural history.

The Reality of the Confiscation Order — The Seizure of "Swords as Weapons"

The GHQ disarmament directive (various directives issued after the signing of the Instrument of Surrender on September 2, 1945) made all swords possessed by civilians, as well as military weapons, subject to confiscation as "potential weapons." Orders for the "submission and delivery of swords" were issued to police stations and occupation force garrisons throughout the country, and swords were collected from households, shrines, and temples across the nation.

The total number of swords confiscated is not precisely known, but estimates suggest it reached hundreds of thousands. Many were destined for disposal—thrown into the sea or smelted. Had protective measures not been undertaken, the finest treasures of Japanese swordsmithing, including national-treasure-caliber masterpieces by smiths such as Masamune, Yoshimitsu, and Kotetsu, might have been permanently lost.

A particularly serious issue was the case of swords like the "Honjō Masamune" (a national-treasure-class masterpiece passed down through the Tokugawa shogunal family) that disappeared without a trace after confiscation. The Honjō Masamune was confiscated in late 1945 and its whereabouts became unknown thereafter, later becoming one of the greatest mysteries in Japanese sword history (its location remains unknown to this day).

The Activities of Sword Preservation Advocates — The Logic of "Swords as Works of Art"

In response to this situation, sword researchers, swordsmiths, and cultural figures moved immediately. The strategy they adopted was to argue to GHQ that "Japanese swords are not weapons but works of art and cultural properties."

The logic that became central to this argument rested on three key points.

First, the demonstration of the artistic value of Japanese swords. To show that Kamakura and Nanboku-chō period masterpieces possessed sculptural and technical value equivalent to Western fine art, actual national-treasure swords and important cultural-property swords held in the Tokyo National Museum were utilized as evidence.

Second, the emphasis on the tradition of imperial inspection (the Emperor's examination) and the cultural status of imperial household swords as cultural properties. Negotiations were conducted to seek special treatment for swords related to the imperial house as "religious and ritual cultural properties."

Third, the assertion of swordsmithing technique as an "intangible cultural property." Contemporary swordsmiths (including Miyairi Shōhei and Takahashi Sadatsugu) were actively working at the time, and their techniques were demonstrated to GHQ as "living traditional art."

These arguments were to some extent accepted by CIE (Civil Information and Education Section) officials, and from 1946 onward, a policy was adopted exempting from confiscation those swords registered and certified as "art swords" (bijutsu-tōken).

The Beginning of the "Art Swords" Registration System

From 1946 onward, a registration system for "art swords" began operating under GHQ supervision. Owners submitted their swords to the police station with jurisdiction, and swords certified as "art swords" through expert examination were permitted to be retained. This registration system was the direct predecessor of the current "Firearms and Swords Control Law" (Gun and Sword Law) system of permits for sword ownership.

However, problems were numerous. Many swords were disposed of while examinations lagged, and in rural areas, many households submitted their swords without being aware of the registration system. Additionally, large numbers of swords were taken home as souvenirs by American military personnel after confiscation, and many of these have not been returned to Japan (though some have been repatriated in recent years through efforts by bereaved families).

The Founding of the Society for the Preservation of Japanese Art Swords (NBTHK) — 1948

In 1948 (Showa 23), following consultation with GHQ, the "Society for the Preservation of Japanese Art Swords" (abbreviation: Nihon Bijutsu Tōken Hozon Kyōkai; English: Society for the Preservation of Japanese Art Swords, or NBTHK) was formally established. Hosokawa Moritsugu became its first president.

The principal missions of the NBTHK were as follows.

First, the operation of the "Important Swords" examination system. The NBTHK appraised swords' quality, period, and creator, and granted certifications such as "Important Swords," "Swords of Special Importance," and "Swords for Preservation" to outstanding examples, thereby establishing objective evaluation standards as cultural properties. This examination system forms the foundation of today's Japanese sword market and collection culture, and examination certificates (NBTHK authentication certificates) hold international authority.

Second, the training and support of swordsmiths. With swordsmiths' livelihoods threatened by postwar economic turmoil, the NBTHK held new-sword examinations (the New Swordsmith Exhibition) to improve the techniques and support the livelihood of active swordsmiths.

Third, the introduction and prevention of outflow of Japanese sword culture to foreign countries. Reflecting on the massive outflow of swords overseas during the occupation period, the NBTHK worked both to introduce Japanese sword culture abroad and to restrict the export of important swords.

The Long-Term Impact of GHQ Sword Confiscation on Japanese Sword Culture

Paradoxically, the crisis of GHQ sword confiscation promoted institutional systematization of Japanese sword culture. Without the crisis, the establishment of the NBTHK and the sword-ownership permit system under the Gun and Sword Law might not have been implemented so early.

The Gun and Sword Law and Sword Ownership — Direct Continuation to Modern Legal Systems

The "art swords registration system" that began during the GHQ occupation period was inherited by the "Firearms and Swords Control Law" (Gun and Sword Law) enacted in 1958 (Showa 33). This law established a system that fundamentally prohibits the possession of swords 15 centimeters or longer in blade length (katana, wakizashi, tantō, etc.), permitting possession only to those holding a "registration certificate."

The issuance of registration certificates is handled by the boards of education of each prefecture, and the "Firearms and Swords Control Law Registration Certificate," which records the sword's period, creator, and form, continues to be preserved and passed down with the sword to this day. This system was designed with the GHQ occupation period's art swords registration system as its direct precedent, and it is the result of the logic that "Japanese swords are cultural properties" becoming fixed as law.

Today's Japanese sword culture—its examination system, preservation techniques, and international culture of appreciation—is constructed upon the sword-preservation movement that passed through the crisis of GHQ confiscation. The swords lost in confiscation cannot be recovered, but it is an indisputable fact that the efforts of those who argued in the study halls of burnt-out Tokyo that "this is art, not a weapon" became the cornerstone of modern Japanese sword culture. Japanese swords have endured into the present not through victory in battle, but through victory in cultural argument under occupation. This paradox is the crux of the historical significance of the GHQ sword confiscation.

The Repatriation of "Confiscated Swords" — An Ongoing Issue into the Present Day

The precise number of swords carried back by American military personnel during the GHQ confiscation period is not known, but estimates suggest tens of thousands or more. Some of these continue to be held in the collections of individual collectors and museums in the United States, and cases of repatriation to Japan are intermittently reported through the efforts of bereaved families, local governments, and researchers.

A representative example is cases where retired American servicemen or their heirs come forward saying "we want to return this to Japan" and donate swords to Japanese museums or shrines. Such "repatriation of confiscated swords" continues to this day more than seven decades after the war, demonstrating that the GHQ confiscation remains an ongoing cultural issue.

Of particular note among confiscated swords are the "votive swords" confiscated from shrines and temples throughout the country. Votive swords are directly tied to the history of their respective shrines and are cultural properties whose return restores the shrine's cultural completeness. The NBTHK and the Agency for Cultural Affairs actively participate in such repatriation activities, demonstrating that the historical reckoning with GHQ confiscation continues to the present day.

GHQ sword confiscation was both "the greatest existential crisis in Japanese sword history" and "a turning point that prompted the institutional establishment of swords as cultural properties." After passing through the Sword Abolition Edict, the Satsuma Rebellion, and the Russo-Japanese War to become "the symbol of the samurai spirit," Japanese swords underwent their greatest trial in the postwar period, and with this the foundation of modern Japanese sword culture was completed.