Marketing Playbook writes about the distinction:
Strategy
– Strategy a : The science of military command, or the science of projecting campaigns and directing great military movements; generalship.
– The set of decisions made to best ensure achievement of the desired objectives, based on an assessment of:
… ones own current situation/position; capabilities & shortcoming; competitive position
… options/alternatives — risks
… timingTactics
– Tactic a : a device for accomplishing an end; b : a method of employing forces in combat
– The set of requirements for a plan to take effectTactical vs. Strategic:
– Always relative to one another
– Tactics: the set of actions taken to fulfill a strategy