The fact that all models continued in service until 1945 reflects that many Ki-48s survived more often than not. This was due to the use of small ship formations (3–10 aircraft) escorted by large numbers of fighters (25–75), typically Nakajima Ki-43s. Although not as fast as more modern fighters, after 1942, the aircraft was still fast enough to enable it to often avoid interception unless it ran into a standing patrol of fighters. The 90th Air Regiment of the 5th Air Army (based in Hopei, north China) equipped with Ki-48s was the only Japanese air unit in China proper to engage the Soviets, although others were advanced in preparation. It flew 20 sorties against the Soviets during 14 August 1945.