Ij-39: IJN’s Naval Decoding

The Imperial Japanese Navy’s (IJN) efforts to decipher enemy codes, particularly during the Pacific War, to gain intelligence on their plans and operations.

Ij-40: IJA’s Military Censorship

The Imperial Japanese Army’s (IJA) control of information and the suppression of dissenting views during World War II.

Ij-41: IJN’s Naval Bombardment

The Imperial Japanese Navy’s (IJN) use of naval guns to bombard enemy coastal defenses and cities, particularly during the early stages of the Pacific War.

Ij-42: IJA’s Military Discipline and Punishment

The Imperial Japanese Army’s (IJA) system of discipline and punishment, which included strict rules, harsh penalties, and a strong emphasis on obedience.

Ij-43: IJN’s Naval Search and Rescue

The Imperial Japanese Navy’s (IJN) efforts to locate and rescue downed pilots and sailors, particularly during the Pacific War, using aircraft and ships.

Ij-44: IJA’s Military Engineering

The Imperial Japanese Army’s (IJA) use of military engineering to construct fortifications, bridges, and other infrastructure.

Ij-45: IJN’s Naval Salvage Operations

The Imperial Japanese Navy’s (IJN) efforts to recover sunken ships and salvage valuable equipment, particularly during the Pacific War.

Ij-46: IJA’s Military Training and Doctrine

The Imperial Japanese Army’s (IJA) approach to military training and doctrine, emphasizing discipline, physical fitness, and the use of traditional Japanese warfare principles.

Ij-31: IJN’s Naval Espionage

The Imperial Japanese Navy’s (IJN) efforts to gather intelligence on enemy navies through espionage, including the use of spies and code-breakers.

Ij-47: IJN’s Naval Anti-Aircraft Defenses

The Imperial Japanese Navy’s (IJN) use of anti-aircraft guns, fighter aircraft, and radar to defend its ships from air attack.