Well, on the surface, that's the premise of every military engagement ever.
But going below the surface, as Sun Tzu said, "All warfare is based on deception." If you're familiar with Matt Reilly, you'll recall in Ice Station the SAS lecturer and officer also said "Have your enemy look at one hand whilst you doing something else with the other," or something to that effect. What it really is is making the enemy think your doing this, have him believe it and counter it. Except you've been expecting this counter and you have an action that nullifies this counter as well as achieving what you want to achieve here, or something at least a little like that.
But if you're one step ahead of this, you'll have prepared a contingency for the enemy action and enacted it. Or even better, have been expecting this all along and have your enemy eat right out of your palm. On the note of contingencies, flow charts are really helpful with planning them, I've found; wouldn't be surprised if Steele's office on the flagship is covered in flowcharts written on butcher's paper.