In late 1944, Van Cao met Vu Quy, a Vietnamese Minh City that he had known before. Vu Quy convince him to join Vietnam Minh, the first task is to compose a march. Van Cao wrote songs for several days in the attic of 171 Mongrant Street (now Nguyen Thuong Hien Street, Hai Ba Trung District, Hanoi) and named the work is "Tien quan ca". "Tien quan ca" is printed on the pages of newspaper arts Independence November 1944. August 13, 1945, Ho Chi Minh City was officially approved, "Tien quan ca" as the national anthem of the country the Democratic Republic of Vietnam .
After the August Revolution in 1945, Van Cao worked as a reporter and presented to the Labor newspaper.
In 1946, Van Cao was sent along Ha Dang Indian transporting weapons and money to southern fronts. Then formally be invited to join the National Salvation of Culture and was elected as Member of the Executive, Van Cao operation in interregional III, head of the police investigation team and the regional section Independent newspaper wrote. In early 1947 he was appointed in charge of a special investigation department of the police regional section 10 at the northern border. Here he was tasked with King Cat twinned to create a secure room to combat the influx of Chinese troops being defeated Kuomintang [3]. In Lao Cai, Van Cao also open a bar for location tracking [7]. March 1948, Van Cao was admitted to the Communist Party of Indochina. In late 1949, Van Cao Van Nghe Newspaper leaves turn to charge the Vietnam Musicians Association. In this period, he continued writing songs for other well-known songs such as "My Village" (1947), "On the season" (1948), "Progress in Hanoi" (1949) ... and especially "School Song Lo song "1947.
In 1952, Van Cao research into Soviet music. According to Hoang Van Chi, then this trip as Van Cao "disappointed in communism" [8]. Tran Gia Phung, it depicts a boy playing the flute with two mouths [9]. Drawn from a straight perspective, one drawn by looking sideways. Background, behind him is the people crowded in a rhythm full of rhythm war movement. This painting along with the red-painted guitar hug a soldier "neo harp" that Van Cao sent Painting Exhibition at the Contact Zone III, he was accused of: hybrid form, content, there ideological issues [3].
Team leaders honor Vietnamese Minh City
Establish
1944, Vu Quy Van Cao was assigned to a posse up, the task of working primarily team unless protection and safe space for the propaganda team members at public places by Van Cao made the team Team chief named honorary Vietnamese Minh City.
Vietnamese guard of honor was set up at the end of May 12/1944 at tiny apartment at 45 Van Cao Nguyen Thuong Hien Street. The team members of the team were selected by Van Cao. The majority of the people you work with him in Haiphong. Van Cao regularly organizes short-term training courses for his teammates on martial arts, use weapons and skills of disguise ... (Van Cao learning martial arts from the age of 9 years. In his youth in Haiphong, Van Cao has repeatedly played the ring and performed martial arts).
Victory
Vietnamese guard of honor of Van Cao Ming works very effectively in Hanoi and Hai Phong. Multiple base our revolution in Hanoi and Haiphong leaked, many Japanese officials arrested were Vietnamese Minh was Vietnam due to name only half the water points. To prevent maximum losses, with many professional measures: written warning letter, in person deterrence ... Van Cao and his comrades had control, disable and touched many Vietnamese name space marker. In it, there are two cases by the Van Cao perform tasks
Vo Van Cam Department in Hanoi
Leader Vo Van Cam Dai Vietnam Youth organization, headquartered in Cathedral City. Holding regular gatherings limbs floods the Japanese gendarmes troublemakers, round up the basis of our revolution. Despite being warned many times, but still extremely aggressive Cam stubborn.
Early May 4/1945, Van Cao was tasked punished Vo Van Cam. Due to the critical nature, Le Trong Nghia (Bac Ky was appointed in charge of the Democrats) that Comrade Pham Van Man (later Colonel, Director General of the Ministry of Public Security Technology) support.
Vo Van Cam had a concubine in Mo market. Whenever he visited his wife, he often went trailers, also called Ba Mai as a guard to accompany cycling. His route from headquarters through Hang Trong on Ba Trieu Nguyen Du to turn up on the market and Mo Pho Hue. Under the plan, followed Man Holding from headquarters, a team of Van Cao is D.H.I welcome in Ba Trieu street corner. When Cam passing D.H.I also followed, and Van Cao will wait before Pho Hue drug store near the market day.
Upon receiving the signal of Man, Van Cao will go directly fired Cam. Man and D.H.I tasked to support and protect Van Cao withdrew. But that happened a surprise that Van Cao unforeseen. Van Cao D.H.I newly put into operation, so when the first screens to follow the market Hold On, so wanted to build, D.H.I has arbitrarily took the shot Man Holding by making export Bronin not able to respond. D.H.I missed, Cam panic get under the car. D.H.I bike run. Name Ba Mai gun shot to chase D.H.I but was promptly shot dead Man Ba Mai.