A unit deployed in a column with models lined up one behind the other can move very easily. The lead model is not restricted by troops either side and so can choose a snaking path which twists about. This is called snaking. Trailing models are placed so that they follow the path of the lead model. This a special type of movement unique to long lines of troops. It isn't a very practical formation for fighting, but it is very handy for threading your way through buildings and between obstacles.