When did military rulers take control in japan? ?

During the Great Depression

Explanation:

The Great Depression continues as a result of the stock market crash. All the negative effect created in the world economy is due to the failure of the New York Stock Exchange. The decade of 1930 began in great turmoil due to the economic Depression and the systemic crisis that passes the capitalism.

Also as a result of the systemic crisis of capitalism and the Great Depression European countries such as Germany and Italy will, in the search for the salvation of the capitalist system, develop their own means of economy, seeking national protection. Italy, Germany and Japan began to develop the Policy of Aggression, with the military rulers taking control, aiming to position themselves contrary to the directions taken by the world economy.

it refers to race, i am pretty sure this was a popular term in nazi germany or something.