structural:summarization, linguistic:translation, linguistic:voice_change, structural:reformatting, stylistic:tone
Cambodian attacks on Ayutthaya

In 1570, after seeing the fall of Ayutthaya to the Burmese, Baraminreachea, the Khmer King, took the opportunity to retake the lands lost to the Siamese. He amassed an army of 20,000 men and captured Nakhon Nayok. He continued to march to Ayutthaya and set up camp at Ban Krathum sub-district. After setting up camp, he also planned to attack the city. The Cambodian navy of 50 ships soon arrived at Bangkok and besieged it. King Maha Thammarachathirat issued a command to defend Ayutthaya. The Cambodian besieged Ayutthaya for 3 days, but the city stood strong. The Cambodian army was forced to retreat back to Cambodia and took a large number of prisoners with them.

In 1574, when the Ayutthayan Army under the command of King Maha Thammarachathirat and King Naresuan was assisting Bayinnaung in his campaign to attack Lanxang, Baraminreachea took the opportunity to attack Ayutthaya again. Luckily, King Naresuan contracted smallpox and was forced to return to Ayutthaya to recover. When he got back to Ayutthaya, the Cambodian Navy was present and besieging Nai Kai fortress. The fortress fell to the Cambodian forces. King Naresuan lured the Cambodian navy up the river where they met the Siamese artillery. After heavy bombardment, the Cambodian navy was forced to retreat.

In 1578, Phraya Chin Chantu, a Chinese noble serving under Cambodia attacked the city of Phetchaburi. The attack failed and Phraya Chin Chantu was too afraid to go back to Cambodia. He was allowed to take refuge in Ayutthaya by Maha Thammaracha. Shortly thereafter, he boarded a junk and fled. At that time, King Naresuan was 24 years old and was aware that Phraya Chin Chantu was a Cambodian agent who took refuge in Ayutthaya under false pretenses to gather information on the Siamese court. He ordered Siamese boats to chase Phraya Chin Chantu's junk. Since Chinese junks are much bigger than Siamese junks and were more suited for sailing out to sea, Phraya Chin Chantu was able to escape.

In 1580, Baraminreachea still believed Siam was weak and ordered Thotsa Racha and Surin Racha to invade Siam with a force of 5,000, including elephants and cavalry. The plan was to raid cities around Ayutthaya such as Saraburi and capture loot and people. Naresuan led a force of 3,000 men out of Ayutthaya to engage the Khmer army. The Khmer army was destroyed and forced to retreat back to Cambodia. This battle made King Naresuan revered among the Siamese and Burmese courts. As a result of this, the Khmers did not dare to attack Thailand again.