The Japanese Navy played a significant role during World War II.

His grandfather was an officer in the Japanese Army.

He always proactively suggests new ideas.

He likes to take a walk in the park at dusk.

He understands the meaning of the proverb 'Teaching is half learning', which means that teaching leads to one's own learning.

The history of the Empire of Japan is very interesting.

He solved the problem in a scientific way.

This reaction occurs through a chemical process.

He is good at tactical thinking.

He exercises every day and leads a healthy life.