Learn how to say Vanguard correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word vanguard:
a group of people leading the way in new developments or ideas:
the experimental spirit of the modernist vanguard
a position at the forefront of new developments or ideas:
the prototype was in the vanguard of technical development
the foremost part of an advancing army or naval force.
late Middle English (denoting the foremost part of an army): shortening of Old French avan(t)garde, from avant ‘before’ + garde ‘guard’