- Kokutais: 762, 1001, Chitose, Genzan, Kanoya, Kisarazu, Matsushima, Mihoro, Misawa, Ominato, Takao
Starting in 1937 the G3Ms were used in the Sino-Japanese war.
The Japanese Imperial Navy's Kanoya Kokutai, based at Tapei, first used G3M2 Model 21s in raids on Hangchow and Kwangteh in August 1937 / August 14, 1937. As they went over 1,250 miles of open water, this was the first ever trans-ocean bombing raid in history.
On August 15, 1937, the Kisarazu Kokutai, based at Omura, Kyushu, executed a raid on China with G3M2s.
By 1940 there were around 130 G3M2s in four kokutais. By December 1941 there were 204.
As the G3Ms were beyond the range of fighter escorts they did suffer heavy losses.
Around the World
From August 26 to October 20, 1939, a L3Y-2 flew 33,000 miles in 194 hours around the world.
By December 1941 there were approximately 250 G3Ms in service. During the first two years of the Pacific War, the G3M was the main medium bomber of the Imperial Japanese Navy.
HMS Repulse and Prince of Wales
The G3M2s played a major part in the sinking, off of Malaya on December 10, 1941, of the HMS Repulse and Prince of Wales.
Sixty G3M2s of the Genzan and Mihoro Kokutais flew from Indo-China and took part in the attack.
After 1942 the G3M was primarily relegated to secondary roles such as transport, training, and glider towing. Some had search radar added and were used as long range maritime patrol bombers.