13th February 1915
Born at Natmauk, a township in Magwe district, central Burma.
Matriculated in the "A" category with distinctions in Burmese and Pali.
Elected to the executive committee of the Rangoon University Students' Union and became the editor of the Students' Union Magazine.
Expelled from the university for publication of the article "Hell Hound at Large" in the union magazine. Expulsion of Ko Aung San and Ko Nu from the university led to the university strike. Later, the government conceded strikers' demands and retracted expulsion orders.
Elected as president of the Rangoon University Students' Union and the All Burma Student's Union. Appointed as a student representative in "Rangoon University Act Amendment Committee" by the government.
Joined Dohbama Asi-ayone ("We-Burmese" Organization) and became Thakin Aung San.
1938 to August 1940
Acted as the Head Office General Secretary of Dohbama Asi-ayone.
Countrywide strikes known as Revolution of Year 1300 (Burmese calendar year).
1939 to 1940
Helped to found Bama-htwet-yat Ghine (Freedom Bloc) and became the general secretary.
Attended Indian National Congress Assembly in Ramgarh District, India.
Went underground due to arrest warrant issued by the British government.
Left for Burma and reached Amoy, China and later to Tokyo, Japan.
Came back to Burma with offer of arms and money support from the Japanese for uprising.
Arrived in Japan for military training together with the first batch of the Thirty Comrades.
Founded Burmese Independence Army (BIA) in Bangkok, Thailand with the help of the Japanese and became chief-of-staff Major-General Aung San (a.k.a. Bo Teza).
Rangoon, capital of Burma, fell to the Japanese Army. The Japanese military administration took over Burma.
Reorganized BIA and become Burma Defence Army (BDA). Appointed as Commander-in-Chief Colonel Aung San.
6th September 1942
Married to Daw Khin Kyi.
Promoted to become Major-General Aung San of BDA.
Invited to Japan and decorated by the Emperor with "Order of the Rising Sun".
1st August 1943
Burma was declared an independent nation and Major-General Aung San became the War Minister.
BDA was renamed as Burma National Army (BNA).
The British troops hiding in hills of Burma received Aung San's plan to turn his forces against the Japanese.
1st August 1944
Declared Burma's independence status as fake in independence day anniversary speech.
Founded Anti-Fascist Organization (AFO) and became the military leader of the organization.
27th March 1945
Burmese troops throughout the country rose up against the Japanese.
15th May 1945
Met with William Slim of the Fourteenth Army.
15th June 1945
Victory parade was held in Rangoon. The Burmese forces participated alongside the British and Allied forces.
The Japanese forces surrendered.
AFO was expanded and renamed as Anti-Fascist People's Freedom League (AFPFL).
BNA was renamed as Patriotic Burmese Forces (PBF).
Signed an agreement to merge PBF with Burma Army under British command during a meeting in Kandy, Ceylon.
Civil government was restored with Dorman-Smith as the governor of Burma.
Elected as president of the AFPFL.
Appointed as Deputy Chairman of the Executive Council of Burma with portfolios for defence and external affairs.
2nd January 1947
Met with Prime Minister Jawaharlal Nehru of India in New Delhi, India during his way to London.
27th January 1947
Signed "Aung San - Attlee Agreement" in London guaranteeing Burma's independence within a year.
12th February 1947
Signed "Panglong Agreement" with leaders from national groups expressing solidarity and support for united Burma in Panglong, Shan State, Burma.
AFPFL won 196 of 202 seats in the election for a constituent assembly.
Convened series of conferences at the Sorrenta Villa in Rangoon for rehabilitation of the country.
13th July 1947
Gave last public speech urging Burmese people to mend their ways and urge them for more discipline.
19th July 1947
Assassinated during the Executive Council meeting together with six other Councillors, including his elder brother, U Ba Win. U Saw, a former Prime Minister, was found guilty of the abetment and executed.
4th January 1948
Burma regained its independence.