How did the glorification of Hirohito advance militarist goals?

The cult of personality around Hirohito made the Japanese people, including the military, agree with everything Hirohito did, including his war efforts.

Explanation:

In his own way, Hirohito was equivalent to Hitler in Nazi Germany, or Mussolini in Fascist Italy: they built a cult of personality around their figure, concentrated political and military power, and in that way, gained support from the vast majority of their country's population, to advance the war.

The Japanese case is particular because the Japanese were extremely nationalist, and the Japanese soldiers were not willing to surrend even in the most difficult situations, because they wanted to protect the honor of Japan, represented by the honor of the Emperor Hirohito.