On 22 February 1937 over the Souchow Railway Station, American Mercenary Robert Short flying a Boeing P-12 Biplane intercepted carrier bombers from the Kaga and destroyed the lead aircraft. In turn he was shot down by the trio of Escort pilots, flying Nakajima A1N2′s, thus becoming the first victory of the JNAF in China.
The victorious pilots are pictured left to right: Lt. Nogiji Ikuta, APO3c Toshio Kuroiwa and F1c Takeo Kazuo.
In 1939 Toshio Kuroiwa (born in 1908) was deemed too old to continue with combat duty so Kuroiwa left the IJN and became a civilian pilot for Imperial Japanese Airways. On 26 August 1944 the civilian transport aircraft he was flying disappeared off the Malay Peninsula and neither the aircraft nor Kuroiwa was ever found.