Japanese military were insanely stubborn. After the two atomic bombings, there was an attempted coup by the Japanese military, trying to stop the surrender.
An Attempted Coup Tried to Stop Japan’s Surrender in World War II. Here’s How It Failed
he Japanese refer to the attempted coup d’état on Aug. 14, 1945, the last night of the Second World War, as the “Kyujo Incident.” Ringleaders Kenji Hatanaka and Jiro Shiizaki, officers at the army ministry, led a battalion of rebels into the Imperial Palace. Lying brazenly, Hatanaka and Shiizaki told the commander of the Second Imperial Guard Regiment that the top brass had ordered the palace sealed off from the outside. The guards, believing that a broader revolt was afoot, agreed to comply with their instructions pending the arrival of the Eastern Army. But Lieutenant General Takeshi Mori, commander of the guards, smelled a rat. Refusing to join the plot, he was shot dead in cold blood. The confederates then forged an order in General Mori’s name and sealed it with Mori’s official stamp. The document instructed the Imperial Guards to occupy the palace, seal off communications with anyone outside the moats and “protect” the emperor against unspecified threats.
In the palace itself, the imperial stenographer was putting the finishing brushstrokes on the Imperial Rescript on Surrender. The emperor’s seal was fixed to the document, making it official. Shortly before midnight, Hirohito entered a soundproof bunker under the palace, where a team of NHK technicians had set up recording equipment. The emperor read the surrender rescript into a microphone. The recording was four minutes and 45 seconds long; the English translation, broadcast overseas the same day, totaled just 652 words. Only one take was needed. The technicians transferred the recording onto two vinyl records, which were pressed on the spot and deposited in a safe under the palace.
With the Imperial Guards behind them, the coup leaders occupied the palace and cut the phone lines. Persuaded that the Eastern Army was on its way, the guards closed the gates and cut off all automobile and foot traffic into and out of the walled compound. The rebels searched the catacombs under the palace, arresting and interrogating staff members at the points of bayonets. They searched for Marquis Kido, the lord privy seal, but could not find him. They also failed to find the phonograph recordings. With an air raid blackout in progress, the lights were doused and the searchers had to use flashlights. The search parties did not know the layout of the underground labyrinth of passageways and bunkers, and found it difficult to interpret the archaic signs marking the locations of various rooms.
Meanwhile, other co-conspirators spread out through Tokyo and Yokohama. The aged Prime Minister Suzuki, who had survived an assassination attempt nine years earlier, was warned moments before his would-be killers arrived. Other detachments occupied the major radio stations, intending to intercept the emperor’s surrender recording before it could be broadcast to the nation.
https://time.com/5877433/wwii-japanese-surrender-coup/
True, but they were running out of everything but stubbornness. They couldn't replace planes (not to mention skilled pilots), or ships. Eventually the US could have starved them to their knees but there would have been more outrage thereby, than was heard after the atomic bombs settled matters.
Yup this.