It is confusing isn't it? In a military formation, persons are lined up in ranks and files as on a chess board. In chess notation the 'ranks' are the lines across and the 'files' are the end to end lines, ie, the King's bishop is on the F file. In a formation it is the same, the ranks are the ones with the soldiers shoulder to shoulder next to one another and the files are the ones with each soldier marching behind each other in a line.
The term 'rank and file' has come to mean the ordinary members of any group, excluding the officers and leaders. So, the rank and file members of a union, or the rank and file members of a political party are the common folks.
Quote:Do you mean the formation is arranged in ranks? Officials who will be awarded higher ranks are at one side and those will be awarded lower ranks are at the other side? And they all stand in this order in a row?
Now, the good part, yes and no. Sometimes formations are lined up by rank, Private, Corporal, Sargent etc, but not always. In formal situations they would be likely to be arranged by rank, but in formations marching off to a mess hall or to a compound to get supplies, maybe not. Squad leaders, who sometimes have the same rank as everyone else in the file, usually march at the front.
Joe