The Vietnamese word "đại nguyên soái" translates to "grand marshal" in English. It is a military rank that is typically the highest in an army, often used to denote a commanding officer who has authority over all branches of the military.
In summary, "đại nguyên soái" is an important term in Vietnamese that denotes a high military rank synonymous with "grand marshal." It is used primarily in formal discussions about military matters and can also serve as a metaphor for leadership in broader contexts.