- Move – The player can move any of his units that are capable of doing so (eg they're not stuck in a swamp or something). See the Movement rules for more details of how to move your forces.
- Shoot – The player can shoot with any of his units that are within range of the enemy. See the Shooting rules for more details about how to resolve shooting.
- Close Assault – The player can move any of his units in to assault the enemy if they are close enough. Close assaults are bloody, desperate affairs where troops are fighting in hand-to-hand combat and shooting at a very close range. This means that both forces can fight in a close assault phase, but only the player whose turn it is can move troops. The Close Assault rules will tell you more about assaults.
The Turn Sequence
Source: Core Rulebook 3E, p. 41
Defines the three phases of a player's turn — Move, Shoot, and Close Assault — performed in that order each turn.