As someone who was in ROTC and regretted joining(I only joined for dodge ball), I'd say he means like the robot type way.
Basically the ROTC moves in a weird way that robots will walk like one day.
The ROTC have to listen to orders like how robots just do orders cause they have to.
I tried to avoid a thing then I saw em so I ran(When I was in the ROTC) and they called me back and suddenly I just walked back, like I was being controlled cause the main point of me running was to avoid them.