Military conflict fought between the Kingdom of Ayutthaya (Siam) and the Kingdom of Burma
The 1568–1569 war ended Ayutthayan independence, making Siam a Burmese vassal state for the first time.
Key Facts
- War start year
- 1568
- Fall of Ayutthaya
- 2 August 1569
- Ayutthayan initial attack target
- Phitsanulok
- Outcome for Ayutthaya
- Became a Burmese vassal state
- Burma's next target
- Lan Xang (occupied briefly until 1570)
By the Numbers
Location
Cause → Event → Consequence
Tensions between the Kingdom of Ayutthaya and the Kingdom of Burma escalated when Ayutthaya launched an attack on Phitsanulok in 1568. Phitsanulok was at that time a vassal state of Burma, making the assault a direct challenge to Burmese regional authority and prompting a military response.
Following Ayutthaya's failed offensive against Phitsanulok, Burma intervened with a larger military campaign against Ayutthaya itself. The conflict culminated on 2 August 1569 with the defeat and capture of Ayutthaya, ending the war in a decisive Burmese victory.
Ayutthaya was reduced to a Burmese vassal state after its defeat in 1569, marking a significant loss of sovereignty. Burma subsequently turned its forces toward Lan Xang, occupying that kingdom for a short period before withdrawing in 1570, consolidating Burmese dominance across the region.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Side B
1 belligerent