Good morning commander and welcome to basic training.

There's a war on so we have to make this a crash course.  
In front of you is your battlefield control interface, with this interface you can command any soldier on the field.

Commander. This is only one soldier, in a few days, you will have to command armies, now left click on him and then left click on open ground to get him moving out of the Base.

Hurry up Commander, you're boring me..

Now that you've mastered the "difficult" task of commanding a single soldier.... try ordering around a squad first select all of the men by left clicking and holding down the mouse button.

You really weren't ready for red team, were you Commander. If this had happened against the Soviets, your base would now be in flames.