The information theory of conflict
The principle is this: Maximize the amount of information you gain, and minimize the amount of information your opponent does.
Actions bring information. Speeding up your actions also speeds up your information gain, and vice versa for your opponent.
Disrupt your opponent's information-processing systems. Specifically: confuse them with contradictions, overwhelm them, divide them, and move faster than their OODA loop can follow.
Ensure your information-processing systems are resilient and robust to disruption.
Attack when your enemy is in the dark, is doubting, is hesitating.
Manipulate your enemy's attention. Use sleight of hand or shock and awe.
Ensure that every move the enemy makes leaks information to you.
Examples to consider: Blitzkrieg (see Col. John Boyd's presentations), Enigma machine, Operation Bodyguard, 2016 election (see Dominic Cummings' talk), most interesting historical battles (e.g. the Battle of Cannae), small-scale infantry tactics.