Strategy is the concept you are going to use to win a battle. “We are going to defend, causing the enemy to expose themselves to emplaced weaponry” or “We are going to aggressively attack using superior numbers to overwhelm the enemy positions” or “We will attack and withdraw luring the enemy into ambush positions”

Tactics is the means by which you are going to implement the strategic concept. “Team alpha will sweep eastward clearing out enemy positions, while team bravo will lay down covering suppressive fire on possible enemy firing positions.”

Strategy is the concept given by the supreme commander to subordinate leaders. The subordinate leaders then utilize Operations Orders, Frag Orders (Frag-O), and SOP to employ the tactics governed by the situation and terrain.