During World War II, the Marine Corps sent troops to defend the southern border with Malaya and also guarded Phuket Province from possible attack.

After Imperial Japan's surrender in September 1945, Thai Marines helped disarm the Japanese Army at Baan Pong District in Ratchaburi Province.

In 1950, when violence in Malaysia spilled over into Thailand, Marine Corps Troop 6 was sent to help restore the peace in Narathiwat Province.

This was in response to the Manhattan Rebellion in which part of the Navy (including Marines) rebelled against the ruling Army junta.

[2] However, this was during the Korean War, and both the United States Military and the Royal Thai Navy urged Thailand to reconsider.

In 1961, tensions flared over the disputed Preah Vihear Temple, situated on the Thai side of a high cliff on the Cambodian border but shown on French maps as being in Cambodia.

Many Thai Marines have died serving their country, and they continue to do so today, especially in the southern border provinces currently affected by the South Thailand insurgency.