Komawar Phibun kan karagar mulki ya zo daidai da farkon yakin cacar baka da kafa mulkin gurguzu a Arewacin Vietnam .Akwai yunkurin juyin mulki da magoya bayan Pridi suka yi a 1948, 1949, da 1951, na biyu da ya kai ga kazamin fada tsakanin sojoji da na ruwa kafin Phibun ya yi nasara.A yunkurin da sojojin ruwan kasar suka yi a shekarar 1951, wanda aka fi sani da juyin mulkin Manhattan, an kusa kashe Phibun a lokacin da sojojin sama masu goyon bayan gwamnati suka kai wa jirgin da aka yi garkuwa da shi hari.Ko da yake suna da sarautar tsarin mulki, Tailandia ta kasance ƙarƙashin jerin gwamnatocin soja, waɗanda aka fi sani da Phibun, waɗanda suka shiga cikin ɗan gajeren lokaci na dimokuradiyya.Thailand ta shiga yakin Koriya .Dakarun 'yan gurguzu na Jam'iyyar Kwaminis ta Thailand sun yi aiki a cikin kasar tun daga farkon shekarun 1960 zuwa 1987. Sun hada da mayakan cikakken lokaci 12,000 a kololuwar motsi, amma ba su yi wata babbar barazana ga jihar ba.A shekara ta 1955 Phibun ya rasa babban matsayinsa na soja ga matasa matasa karkashin jagorancin Field Marshal Sarit Thanarat da Janar Thanom Kittikachorn, sojojin Sarit sun yi juyin mulki mara jini a ranar 17 ga Satumba 1957, wanda ya kawo karshen aikin Phibun da kyau.Juyin mulkin ya fara daɗaɗɗen al'ada na gwamnatocin soja da Amurka ke marawa baya a Thailand.Thanom ya zama Firayim Minista har zuwa 1958, sannan ya ba da matsayinsa ga Sarit, ainihin shugaban mulkin.Sarit ya rike madafun iko har zuwa mutuwarsa a shekara ta 1963, lokacin da Thanom ya sake zama kan gaba.Gwamnatin Sarit da Thanom sun sami goyon bayan Amurka sosai .Tailandia ta zama ƙawance ta Amurka a 1954 tare da kafa SEATO Yayin da ake yaƙin Indochina tsakanin Vietnamese da Faransanci , Thailand (ba tare da son duka biyu daidai ba) ya tsaya a nesa, amma da zarar ya zama yaƙi tsakanin Amurka da 'Yan kwaminisanci na Vietnam, Thailand sun sadaukar da kansu ga bangaren Amurka, tare da kulla yarjejeniya ta asirce da Amurka a 1961, ta tura dakaru zuwa Vietnam da Laos , tare da barin Amurka ta yi amfani da sansanonin jiragen sama a gabashin kasar don gudanar da yakinta na bama-bamai da Arewacin Vietnam. .'Yan Vietnam sun mayar da martani ne ta hanyar mara wa jam'iyyar gurguzu ta kasar Tailan baya tada kayar baya a arewaci, arewa maso gabas, da kuma wasu lokutan a kudancin kasar, inda 'yan daba suka hada kai da musulmin yankin da ba su gamsu da su ba.A zamanin baya-bayan nan, Thailand na da dangantaka ta kud-da-kud da Amurka, wadda take gani a matsayin mai kariya daga juyin juya halin gurguzu a kasashe makwabta.Rundunar sojin saman Amurka ta bakwai da ta goma sha uku tana da hedikwata ne a sansanin sojin sama na Udon Royal Thai.^[70]Agent Orange, wani sinadari mai kashe ciyawa da lalata da sojojin Amurka ke amfani da shi a matsayin wani bangare na shirin yaki da ciyawa, Operation Ranch Hand, Amurka ta gwada a Thailand a lokacin yakin kudu maso gabashin Asiya.An gano ganguna da aka binne kuma an tabbatar da cewa su ne Agent Orange a cikin 1999. ^[71] Ma'aikatan da suka gano ganguna sun kamu da rashin lafiya yayin da suke haɓaka filin jirgin sama kusa da gundumar Hua Hin, kilomita 100 kudu da Bangkok.^[72]