1. The foremost part of an advancing army or military force
The vanguard of the army led the charge into battle.
A vanguarda do exército liderou o ataque na batalha.
2. A group of people leading the way in new developments or ideas; the forefront of artistic, social, or political change
The avant-garde artists were at the vanguard of modernism.
Os artistas de vanguarda estavam na frente do modernismo.
3. The leading position or the cutting edge of progress
Technology companies are at the vanguard of innovation.
As empresas de tecnologia estão na vanguarda da inovação.