The player chooses from which territory they want to move their units. Afterwards, in the drop-down, they can choose which and how many they are going to carry out in that phase. Once they have selected them, click on the target territory the units that will pass there.
The player that has chosen this phase will be able to move their units from any territory they control; the rest, on the other hand, will only be able to do it from one of them.
If the target territory is occupied by an opponent´s military units, a combat will take place (see Combat).