 Ramba uchiverenga ndima iyi - Thailand yakarwisana neFrance neThailand muna October 1940 kusvika muna May 1941 kuti idzorere nzvimbo kubva kuFrench Indochina. Mauto eJapan akapinda muThailandawa nehafu pamberi pokurwiswa kwePearl Harbor nemhaka yeInternational Dateline, nguva yomunzvimbomo yakanga iri mangwanani aDecember 8, 1941. Maawa mashomanene bedzi pashure pokupinda nechisimba, Mutungamiriri weHurumende Field Marshal Phibunsongkhram akarayira kuti kurwisana navaJapan kugumiswe. Gadziriro huru yemabasa ehondo akabatana eJapan neThailand, umo mauto eThailand aizopinda muBurma kudzivirira divi rerudyi remauto eJapan, yakabvumiranwa musi wa14 Zvita 1941. Musi wa 21 Zvita 1941, chibvumirano chemauto neJapan chakasainwa uye musi wa 25 Ndira 1942, Sang Phathanothai akaverenga panhepfenyuro chiziviso chepamutemo cheThailand chehondo kuUnited Kingdom neUnited States. Mumiriri weThailand muUnited States, Mom Rajawongse Seni Pramoj, haana kuendesa kopi yake yokuzivisa hondo. Naizvozvo, kunyange zvazvo vaBritain vakadzorera nokuparidzira hondo kuThailand ndokuirangarira kuva nyika ine utsinye, United States haina kudaro. 