#formation_acting_as_a_unit__formation  an arrangement of people or things acting as a unit; "a defensive formation"; "a formation of planes"
  supertype:  #arrangement  an orderly grouping (of things or persons)
  subtype:  #flight.formation  a formation of aircraft in flight
  subtype:  #military_formation  a formation of troops
     subtype:  #open_order  a military formation leaving enough space between ranks to allow an inspecting officer to pass
     subtype:  #close_order__closeorder  a military formation for drill or marching
     subtype:  #extended_order  a military formation for skirmishing; as widely separated as the tactical situation permits
     subtype:  #sick_call__sick_parade  the daily military formation at which individuals report to the medical officer as sick
  subtype:  #backfield  the offensive football players who line up behind the linemen
  subtype:  #secondary  the defensive football players who line up behind the linemen
  subtype:  #line.formation  a formation of people or things one behind another; "the line stretched clear around the corner"; "you must wait in a long line at the checkout counter"
     subtype:  #diagonal.line  an oblique line of squares of the same color on a checkerboard; "the bishop moves on the diagonals"
        subtype:  #main_diagonal__principal_diagonal__principaldiagonal  the diagonal of a square matrix running from the upper left entry to the lower right entry
        subtype:  #secondary_diagonal__secondarydiagonal  the diagonal of a square matrix running from the lower left entry to the upper right entry
     subtype:  #single_file__file__Indian_file  a line of persons or things ranged one behind the other
        subtype:  #snake_dance.single_file__snakedance  a group advancing in a single-file serpentine path
        subtype:  #column  a line of (usually military) units following one after another
     subtype:  #line_of_march  the arrangement of people in a line for marching
     subtype:  #line_of_succession  the order in which individuals are expected to succeed one another in some official position
     subtype:  #picket_line  a line of people acting as pickets
     subtype:  #conga_line__congaline  a line of people in single file performing the conga dance
     subtype:  #trap_line  a line or series of traps
     subtype:  #waiting_line__waitingline__queue  a line of people or vehicles waiting for something
        subtype:  #breadline__bread_line__breadline  a queue of people waiting for free food
        subtype:  #checkout_line  a queue of people waiting to pay for purchases
        subtype:  #chow_line  a queue of people waiting for food to be served (especially at a military camp)
        subtype:  #gas_line.waiting_line__gasline  a queue of vehicles waiting to purchase gasoline
        subtype:  #reception_line__receptionline  a line of people (hosts and guests of honor) who welcome the guests at a reception party
        subtype:  #ticket_line  a queue of people waiting to buy tickets
        subtype:  #unemployment_line  a queue of people waiting for employment
  subtype:  #line  a formation of people or things one beside another; "the line of soldiers advanced with their bayonets fixed"; "they were arrayed in line of battle"; "the cast stood in line for the curtain call"
     subtype:  #rivet_line__rivetline  a line of rivets at a seam; "the fuselage cracked along the rivet line"
     subtype:  #chorus_line__chorus  a body of dancers or singers who perform together
        subtype:  #corps_de_ballet__ensemble  the chorus of a ballet company
     subtype:  #diagonal.line  an oblique line of squares of the same color on a checkerboard; "the bishop moves on the diagonals"
     subtype:  #linemen  the football players who line up on the line of scrimmage
     subtype:  #lineup  a line of persons arranged by police for inspection or identification
     subtype:  #row  an arrangement of objects or people side by side in a line: "a row of chairs"
        subtype:  #serration.row  a row of notches; "the pliers had serrations to improve the grip"
     subtype:  #rank.line  a row or line of people (especially soldiers or police) standing abreast of one another; "the entrance was guarded by ranks of policemen"
  subtype:  #center.formation  the middle of a military or naval formation; "they had to reinforce the center"
  subtype:  #flank  the side of military or naval formation; "they attacked the enemy's right flank"
  subtype:  #head.formation  the front of a military formation or procession; "the head of the column advanced boldly"; "they were at the head of the attack"
  subtype:  #rear  the back of a military formation or procession; "infantrymen were in the rear"

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