After the outbreak of World War II, Japan began to invade. Due to the limited transportation of goods in the United States, Japan had to take a chance and go south to Southeast Asia to seize the territory of the old empire. At this time, the target was Thailand, because Thailand is a sovereign country. Starting from Thailand, we can avoid the attention of countries such as the United States, Britain and France and gain a foothold in Thailand. On the right, it can go down to Singapore and enter the Philippines. On the left, it can attack India and Myanmar.
Thus, from 65438 to 0940, Japan began to work in Thailand and signed the Japan-Thailand Friendship Treaty. Thailand also means to use Japan. Why? Thailand is also bitter. It lies between Britain and France, which delimit their territory from time to time. So Thailand wants to attract Japan to Southeast Asia and use Japan to recover its territory.
The following year, Japan officially decided to go south. The first is landing in Thailand. Thailand also resisted for a while, but after a few hours, it left Japan and announced that it would lend it to Japan. Japan chose Thailand as its foothold in Southeast Asia, and then began to sneak attack Pearl Harbor and launch a full-scale Pacific War. Since then, the relationship between Thailand and Japan has been very hot. The two signed the Treaty of Japan-Thailand Alliance, and the whole of Thailand was opened to Japan. The Thai army helped Japan fight.
At this time, Thai diplomats and the Thai government had great opinions. In Washington, Thailand's ambassador to the United States, Shini Ba Maw, announced the severance of relations with the Thai government, declared the Thai government invalid, and hoped to establish a "Free Thailand Movement". This is the same as general de Gaulle's free France, but after all, free France still has troops and colonies abroad. This free Thailand is a group of diplomats. However, it was this move that finally helped Thailand avoid the status of a defeated country.
By 1945, Japan announced its unconditional surrender. Seeing that Thailand could not benefit from Japan, Thailand hastily withdrew from the alliance. As Japan, which once cheated Thailand, can only announce a large amount of compensation and the breakdown of their relationship.