Each grid point just has sends armies in 1 to 4 directions per timestep. So you have to visit each occupied square once per time step. What is the sequencing

Each grid point just has sends armies in 1 to 4 directions per timestep. So you have to visit each occupied square once per time step. What is the sequencing problem? It's just 4 bits per square (send armies N,S,E,W).