No, strategy involves getting information and using it to formulate a strategy to achieve victory. It differs from sport to sport, with baseball the least strategic of all. Football is highly strategic as it involves gathering knowledge about the opponents strengths and weaknesses, and coming up with both offensive and defensive play calling strategies and adjusting to game situations. War relies on getting information on enemy strengths and weaknesses, and coming up with strategies of when to attack, when to defend, etc.
Baseball is mainly about pitchers vs. hitters and watching what unfolds. The manager can't call for the pitcher to try for a strikeout or a hitter to try for a home run or a fielder to make spectacular play. Most of the game is entirely out of the control of the manager's ability to affect it.