The rank and file do not have any idea about the war.
Choose the correct meaning of the underlined phrase-

• The rank and file do not have any idea about the war.
- 'The rank and file' means - Ordinary soldiers

• Rank and file
- English Meaning: Soldiers who are not officers, or the members of an organization who are not part of the leadership.
- Bangla Meaning: সাধারণ পদস্থ সৈনিকবর্গ; সাধারণ স্তরের জনগণ; সাধারণ স্তরের।

• Ex. Sentence: He is a rank-and-file soldier.
- Bangla Meaning: সে একজন সাধারণ সৈন্য।

Source:
1. Cambridge Dictionary.
2. English-Bangla Dictionary.