Japan Standard Time (JST)

Cervus nippon, commonly known as sika deer, spotted deer, or Japanese deer

風林火山: as fast as the wind, as quiet as the forest, as daring as fire, as immovable as the mountain.

(military) "wind-forest-fire-mountain", a military strategy that's based on the premise of being "as swift as the wind, as silent as the forest, as fierce as the fire, as firm as the mountain"

come home in triumph

Empire of Japan (official name of Japan under the Constitution of the Empire of Japan, 1890-1947)

“a hundred days of sermonizing, one fart” → a metaphor for how something that one has put great effort into can come to nothing after even a slight mistake, much as a hundred days of serious spiritual study can be lost to the winds

Kyūjitai form of 大日本帝国: Empire of Japan

(military, historical) the Imperial Japanese Army

(military, historical) the Imperial Japanese Navy