The term "A6M3 Mitsubishi Green" likely refers to a specific color scheme used on Mitsubishi A6M3 Zero fighter aircraft during World War II. In this context, "Mitsubishi Green" denotes the green color applied to the aircraft, and A6M3 indicates the model variant of the Mitsubishi Zero.
The Mitsubishi A6M3 Zero was a Japanese fighter aircraft known for its agility and speed. Different variants of the Zero were used by the Imperial Japanese Navy during the war, and they were often painted in various camouflage schemes.