Members of Political Bureau attended the open conference that was chaired by comrade Lê Duẩn (stood in the middle) - The First Secretary of Central Committee of the Labour Party; as seen from the left are comrade Phạm Hùng (the second man), General Võ Nguyên Giáp (the fourth man), comrade Lê Đức Thọ. As seen from the right are General Văn Tiến Dũng, comrade Trường Chinh and Comrade Phạm Văn Đồng.
Political Bureau concluded that: based on the 2-year strategic plan (1975 and 1976), it stressed that the whole 1975 will be appropriate time, and if it falls in early or late 1975, the liberating of the South will have to be achieved in 1975.

At General Headquarters (House D67); during the open conference held by Political Bureau; on December 27, 1974, based on the proposal of Comrade Phạm Hùng and Lieutenant General Trần Văn Trà, Political Bureau and the Military Commission of the Party Central Committee gave an order for the forces in Southeast Vietnam to launch an attack on Phước Long province.

February 1975, To reinforce the leadership, and to command the Spring 1975 offensive campaign, especially, to ensure the victory of the Central Highland Campaign; Political Bureau and the Military Commission of the Party Central Committee sent General Văn Tiến Dũng to the South battlefield, which formed a representative division of High command in the South battlefield (its code name: A75).

When the Central Highlands campaign was nearing a victory, at the General Headquarters (House D67), Political Bureau and the Military Commission of the Party Central Committee held a conference in a rush.

Troops of Liberation Army entered Ngọ Môn gate, in front of the Imperial City of Huế

When Huế was nearing its liberation, the army of the Republic of Vietnam fled to Đà Nẵng, at General Headquarters (House D67), Political Bureau held a conference in a rush.
Political Bureau concluded that: The time has come, what is intended to be done in twenty years now can be done within one day. Seize the opportunity and take prompt action; be brave and unpredictable; We have to liberate Sài Gòn before the rainy season.

Troops of Liberation Army took control of agencies and units in Đà Nẵng city that had been owned by the administration and units of the Republic of Vietnam before
Tens of thousands of troops of the Republic of Vietnam in Quảng - Đà presented themselves to the revolutionary government
The people of Đà Nẵng city poured out the road to welcome the liberation troops

At the Headquarters (House D67), the Military Commission of the Party Central Committee held a meeting on March 31, 1975 and decided to launch a general offensive campaign that was intended to liberate the South in a shortest period of time, and the best time would be in April 1975. “Activeness, bravery, unpredictability, victory” was issued as a guideline.
April 7, 1975 General Võ Nguyên Giáp-Secretary of The Military Commission of the Party Central Committeesent a secret telegram No.1574 that said as follows: “Be more and more active, Be braver and Braver. Try to get to the front in a shortest time and liberate the South.Be determined to fight for winning the victory”.

April 14, 1975 At the General Headquarters (House D67), the Political Bureau held a meeting and then passed an edict No. 37/k on the launching of a campaign to liberate Sài Gòn - Gia định, and naming the campaign Hồ Chí Minh. A meeting that was chaired by comrade Lê Duẩn - the First Secretary (the third man who sat on the right) took place, the attendants included comrade Trường Chinh, comrade Lê Hữu Đức (Director of Operation Bureau); the man who was speaking (on the right) was General Võ Nguyên Giáp

The map illstrating Hồ Chí Minh campaign. On April 26, 1975, from five directions, the forces of Liberation Army opened fire on Sài Gòn

The Republic of Vietnam - A 8-day term with two Presidents
April 28, 1975 - Trần Văn Hương resigned, General Dương Văn Minh succeeded

April 24, 1975
The White House was in a hurry to implement a plan toevacuate the American from Sài Gòn

April 26, 1975 - Opening fire on Sài Gòn
April 28, 1975 - Biên Hòa was liberated
April 29, 1975 Spratly Islands were liberated

April 29, 1975 - White House and Operation Frequent Wind

Ngày 29/4/1975
Sài Gòn was in chaos

April 30, 1975 The fall of Sài Gòn