I tried to suggest, but it didn’t work, and here is some information that might be helpful.
**The Armour - Tank Arms **
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The Armour - Tank Arms is a an important attacking force of the Vietnam People’s Army. Founded in 1959, with the establishment of the first tank regiment (Tank Regiment No.202), then developed into regiments and battalions; taking part in campaigns in the South battle field under banner of National Front for the Liberation of South Vietnam ( Vietcong) , such as: Ta May - Lang Vay (1968), Dong Ha, Dac To, Tan Canh, Loc Ninh (1972), Cua Viet (1973), Phuoc Long, Buon Me Thuot and Ho Chi Minh Campaign to liberate Saigon and unify the country (1975).
Emblem of the Armour - Tank Arms period from 1968 to 1975.
- period from 1975 to now
Since Ho Chi Minh Campaign to liberate Saigon and unify the country (4/1975). until now, The Armour - Tank Arms of Vietnam People’s Army has used emblem with the image of the golden star on a red background to participate in campaigns for the defense of the country and fulfill international obligations.
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PT76 in service of the Armour - Tank Arms in Cambodia 1979-1989
The tank in the 1985 military parade celebrating the 30/4 Victory Anniversary
Emblem of the Armour - Tank Arms period from 1975 to now.
**Vietnam People’s Air Forces **
The Vietnam People’s Air Force (VPAF) officially the Air Defence - Air Force Service (ADAF Service; Vietnamese) or the Vietnam Air Force, is the aerial and air defence service branch of Vietnam. It is the modern incarnation of the so-called North Vietnamese Air Force (NVAF) and absorbed the South Vietnamese Air Force (RVNAF/VNAF) following the reunification of Vietnam in 1975.
With the different political systems between the two regions during the period of the resistance against the U.S. to unify the country, the use of military equipment was also different. Therefore, I will divide the Vietnamese Air Force into two parts.
- Republic of Vietnam Air Force (South Vietnam)
The Air component of the ANV was the Vietnamiènne Armée de l’Air (VALA, Vietnamese Air Force in English, VNAF) was an Air Department (Branch) within the ANV and later on 1 July 1955 it was established separately as a military force, precursor to the Republic of Vietnam Air Force
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In January 1955, planning for the RVNAF began, building on the Vietnamese air force that the French had established in 1950. As of January 1955, the RVNAF consisted of 3,434 men, with plans to organize them into two liaison squadrons and one air transport squadron. France retained a contract to train the RVNAF until 1957
A Douglas A-1H Skyraider (U.S. Navy BuNo 137609) of the South Vietnamese Air Force (VNAF) in May 1966.
- Vietnam Democratic Republic Air Force (North Vietnam)
The northern part formed the Vietnam People’s Air Force and adopted a yellow star bordered red as its roundel and fin flash.
North Vietnam changed its roundel in 1965 to yellow star on red disc bordered yellow and red bars bordered yellow with no fin flash
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On May 30, 1963, the 921st Fighter Air Regiment, code-named SAO ĐỎ Squadron, was established at the Van Quy Plateau (China), based on the MiG-17 fighter training squadron. By the end of 1965, the Vietnam People’s Air Force received additional MiG-21 aircraft supplied by the Soviet Union. The MiG-21s were assembled at the hangar of Noi Bai Airport starting in mid-1965. Technical personnel were trained to transition from operating the MiG-17 to the MiG-21 at this airport as well. The first group of MiG-21 pilots, trained in Krasnodar, was led by Lieutenant Pham Thanh Ngan, who also became the first to shoot down a U.S. aircraft with a MiG-21.
A MiG-21 fighter aircraft in the VPAF. During the Vietnam War, the MiG-21 was equipped with the AA-2 air-to-air missile.
- Vietnam People’s Air Forces
In 1975, the Vietnam Air Force was dissolves, and the Vietnam People’s Air Forces (as it has been called since 1976), kept using the former “north” marking.
Yellow bordered red roundel with a yellow five-pointed star in the middle reaching the edges of the red disk. Behind all a horizontal red bar with yellow border…
- Naval Air Force, Vietnam People’s Navy*
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The Naval Air Force is virtually a combat arm and the aviation component of the (Vietnam People’s Navy) that is functioned to perform tasks at sea or along the coast and islands by means of the air force such as aircraft combat aircraft, transport helicopters and patrol aircraft, etc. The component was once under Vietnam People’s Air Force, before being transferred to the Vietnam People’s Navy for better combat coordinations. The Naval Air Force Brigade 954 is currently the sole unit of the Naval Air Force.
The KA-28 anti-submarine helicopter in service of The Naval Air Force Brigade 954
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It was formally a branch of Vietnam’s military, the Vietnam People’s Army, and fell under the management of the Vietnam Ministry of National Defence. Since August 27, 2013, it has been transferred under the direct management of the Government of Vietnam, and has also changed its name from Vietnam Marine Police (VMP) to the current Vietnam Coast Guard name.
Source
List of air forces - Wikipedia
Vietnamese Roundels