Someone who devises strategies.
a person or party that is consulted
One skilled in strategy, or the science of directing great military movements.
a person whose occupation is to be consulted for their expertise, advice, or help in an area or specialty; a party whose business is to be similarly consulted
an expert in strategy (especially in warfare)
an expert who gives advice.
A strategist is a person with responsibility for the formulation and implementation of a strategy. Strategy generally involves setting goals, determining actions to achieve the goals, and mobilizing resources to execute the actions.
an expert who gives advice;
‘an adviser helped students select their courses’; ‘the United States sent military advisors to Guatemala’;
A consultant (from Latin: consultare ) is a professional (also known as Expert, Specialist, see variations of meaning below) who provides advice and further purposeful activities in an area of specialization.