All the young men joining the army this time have been given tests for coronavirus SARS-CoV-2.
Similar ceremonies were organised across the country to see off new recruits, with attention paid to ensuring COVID-19 prevention.
In the central city of Da Nang, more than 1,000 young men set off for military service the same day.
The number of new recruits in localities in Military Zone 5 reached over 19,000.
In Vietnam, two-year military service is compulsory for young men aged between 18 and 25 years old, while women can volunteer.