as Major General On 7 December 1941, Japan attacked the
United States and Britain. On 28 December, at a ceremony in
Bangkok, the
Burma Independence Army (BIA) was officially formed. The Thirty Comrades, as well as Colonel Suzuki, had their blood drawn from their arms in syringes, then poured into a silver bowl and mixed with liquor from which each of them drank –
thway thauk in time-honoured Burmese military tradition – pledging "eternal loyalty" among themselves and to the cause of Burmese independence. The BIA initially numbered 227 Burmese and 74 Japanese. Some of the Burmese soldiers were second-generation residents in Thailand, who could not speak Burmese. The BIA formed was broken into six units which were assigned to participate in the
invasion of Burma in January 1942, initially as intelligence-gatherers, saboteurs and foragers. The leader of the Burma Independence Army were declared with Keiji Suzuki as Commander-in-Chief, with Aung San as
Senior Staff Officer. When the army entered into Burma it was made up of 2,300 men and organised in the following way. As the
Japanese and the BIA entered Burma, the BIA gained a lot of support from the civilian population and were bolstered by many
Bamar volunteers. This caused their numbers to grow to such a level that by the time the Japanese forces reached
Rangoon on 8 March, the BIA numbered 10,000–12,000, and eventually expanded to between 18,000 and 23,000. The Japanese provided few weapons to the BIA, but they armed themselves from abandoned or captured British weapons. With the help of a propaganda campaign from the BIA, Suzuki was welcomed by the Burmese people since word was spread that "
Bo Mo Gyo" (Suzuki) was a decedent of the Prince of Myingun, a Burmese prince in the direct line of succession to the Burmese throne who had been exiled after a failed rebellion to
Saigon, where he died in 1923. Propaganda claiming that Bo Mo Gyo was to lead the resistance into restoring the throne soon spread throughout Burma, which helped to provide a format for the Burmese villagers to accept the involvement of Japanese help in overthrowing the British. Throughout the invasion, the swelling numbers of the BIA were involved in attacks on minority populations (particularly the
Karens) and preyed on
Indian refugees fleeing from the Japanese. The worst atrocities against the Karens in the
Irrawaddy Delta south of Rangoon cannot however be attributed to
dacoits or unorganised recruits, but rather the actions of a subset of regular BIA and their Japanese officers. Elements of the BIA in Irrawaddy destroyed 400 Karen villages with a death toll reaching 1,800. In one instance, which was also described in
Kyaw Zaw's, one of the Thirty Comrades, memoirs, Colonel Suzuki personally ordered the BIA to destroy two large Karen villages and killing all within as an act of retribution after one of his officers was killed in an attack by anti-Japanese resistance.
Battle of Shwedaung in early 1942 One action in which the BIA played a major part was at Shwedaung, near
Prome, in Southern Burma. On 29 March 1942, a detachment from the British
7th Armoured Brigade commanded by Brigadier
John Henry Anstice was retreating from nearby
Paungde. Another detachment of two
Indian battalions was sent to clear Shwedaung, which lay on Anstice's line of retreat and was held by the II Battalion of the Japanese 215th Regiment, commanded by Major Misao Sato, and 1,300 men belonging to the BIA under Bo Yan Naing, one of the Thirty Comrades. Two Japanese liaison officers named Hirayama and Ikeda accompanied the BIA. With Anstice's force and the Indian troops attacking Shwedaung from two sides, the roadblocks were soon cleared, but a lucky shot from a Japanese anti-tank gun knocked out a tank on a vital bridge and forced the British to retreat across open fields where Bo Yan Naing ambushed them with 400 men. Eventually the British and Indian force broke free and continued their retreat, having lost ten tanks, two field guns and 350 men killed or wounded. The BIA's casualties were heavy; 60 killed, 300 wounded, 60 captured and 350 missing, who had deserted. Hirayama and Ikeda were both killed. Most of the BIA's casualties resulted from inexperience and lack of equipment. Though Burmese political leader
Ba Maw and others later eulogised the BIA's participation in the battle, the official Japanese history never mentioned them.
Tension between the Japanese and BIA As the invasion speedily continued in Japan's favour, more and more territory fell into Japanese hands who disregarded the agreement for Burma's independence. As the BIA's ranks had swelled with thousands of unorganised army and volunteers, with plenty of weapons spread throughout the country which led to widespread chaos, looting and killings were common. The Japanese army command formed an administration on their own terms and the commanders of the
Fifteenth Army began undermining the creation of a Burmese government. Thakin Tun Oke had been selected to be the political administrator and government organiser. BIA attempted to form local governments in Burma. Attempts over the administration of
Moulmein, the
Japanese 55th Division had flatly refused Burmese requests and even forbade them to enter the town. Many in the BIA considered the Japanese suppression of them to be based on notions of
racial superiority."Independence is not the kind of thing you can get by begging for it from other people. You should proclaim it yourselves. The Japanese refuse to give it? Very well then, tell them that you will cross over to someplace like Twante and proclaim it and set up your government. What's the difficulty about that? If they start shooting, you shoot back." Aung San tried to establish a training school in
Bhamo. His efforts were too late and interrupted by the
Kempeitai. An officers' training school was established in
Mingaladon and the new force of 3,000 men were recruited and trained by Japanese instructors as regular army battalions instead of a guerrilla force during the second half of 1942. After the change in leadership, Aung Sun tried to push for what he considered the true mission of the army, which was not just a military group composed of the Thakins, but an army of "true patriots irrespective of political creed or race and dedicated to national independence". ==Transition into the Burma National Army==