For the most part you command your regiments on the battlefield using the cursors and clicks on the map. The three wooden toolbar buttons provide options not covered by the cursors.

The top button is a targeting shortcut. When one of your regiments is active, click repeatedly on this button to cycle through all enemy units in range. This reduces the amount of scrolling you need to do.

The middle button ends the turn of an active unit. If you choose to reserve your fire or to move only part of your movement points, you need to click here to advance the game to the next active unit.

The lower button orders all of your forces to retreat. You should click here only if the battle is lost and retreating might save the lives of some valuable regiments.

At the very bottom of the toolbar is a picture of your defense minister. Clicking here turns control of the battle over to him.