That is done by special drill teams that do that exclusively. The average Marine or soldier just have six or so very basic things they do with their rifle. Those things are almost never done again after boot camp.
Those things are right and left shoulder arms, port arms, trail arms, and present arms. None of these require twirling.
Marching is a highly efficient way to move large amounts of people.
Twirling your gun around isn’t though
That is done by special drill teams that do that exclusively. The average Marine or soldier just have six or so very basic things they do with their rifle. Those things are almost never done again after boot camp.
Those things are right and left shoulder arms, port arms, trail arms, and present arms. None of these require twirling.