In my own words? Okay!
Tactics: The methods, techniques, and little problem solving things you were trained on, and how to you personally use them to solve problems within the 0 - 1000 meter range.
Strategy: The overall scheme of a major engagement, usually involving a large piece of land or major spectrum of the battlefield. (i.e. fighting for France, or achieving/maintaining air superiority)
Logistics: The system by which you move support and material goods to resupply/support your troops. The way you help your people out (not necessarily the supplies themselves).
Tactical: Usually the battlefield level of combat. Actual combat between combatants versus...
Strategic: Which describes the fight over the infrastructure of an enemy. [Edit added:] You can also think of it as the battle over the will and means of the enemy to fight. Bombing downtown Moscow with a Minuteman III would be strategic warfare, in that you've really hit Ivan in the face.
Think of Tactical and Strategic this way: Tactical engagement would be battalion vs battalion, where Strategic engagement would involve bombing factories in an attempt to wear down the infrastructure of the enemy. Tough concept to get, but they are two different planes of existence.
Hope this helps,
Oswald
Remember Tactical Air Command and Strategic Air Command?
[Edit: Added another thought. 27 Jan 02]
[ 01-27-2002: Message edited by: Oswald ]</p>