A tactician is defined as a person who is skilled in planning and executing tactics. There are several synonyms that can be used to describe a tactician. A strategist is one such synonym, denoting a person who is skilled in devising and executing strategies to achieve a particular goal. A mastermind, on the other hand, is used to describe someone who is exceptionally skilled at planning and executing complex operations, often involving a great deal of foresight and creativity. Another synonym for tactician is a planner, which is someone who is skilled at laying out a detailed plan for achieving a particular objective. Finally, a schemer is another synonym that can be used to describe someone who is cunning and manipulative in their approach to achieving their goals.