Before revision: Lockstep in the Auburn Prison, c.1910 In the US , lockstep marching or simply lockstep is marching in a very close single file in such a way that the leg of each person in the file moves in the same way and at the same time as the corresponding leg of the person immediately in front of him, so that their legs stay very close all the time.
After revision: Lockstep in the Auburn Prison, c.1910 In the United States , lockstep marching or simply lockstep is marching in a very close single file in such a way that the leg of each person in the file moves in the same way and at the same time as the corresponding leg of the person immediately in front of him, so that their legs stay very close all the time.