Battle of Lake Khasan

Battle of Lake Khasan
Part of the Soviet–Japanese border conflicts

Lieutenant I. N. Moshlyak and two Soviet soldiers on Zaozernaya Hill after the battle
Date29 July – 11 August 1938
(1 week and 6 days)
Location
Result Ceasefire
Territorial
changes
Japan agrees to withdraw its forces from the disputed territory; Soviet-Japanese border set at the Tumen River.
Belligerents
 Soviet Union

 Japan

Commanders and leaders
Units involved
Soviet Border Troops
  • 59th Khasanskiy Detachment
Strength
22,950
354 tanks
13 self-propelled guns
237 artillery pieces
70 fighters
180 bombers
7,000–7,300
37 artillery pieces
Casualties and losses
792 killed & missing
3,279 wounded or sick
46+ tanks destroyed
(Soviet sources)
96 tanks destroyed or crippled
(Japanese sources)
526 killed
913 wounded(Japanese sources)
3000 killed & missing(Soviet claim)

The Battle of Lake Khasan (Russian: Хасанские бои), also known as the Changkufeng Incident (Chinese and Japanese: 張鼓峰事件; Chinese pinyin: Zhānggǔfēng Shìjiàn; Japanese romaji: Chōkohō Jiken), was an attempted military incursion by Manchukuo, a Japanese puppet state, into territory claimed and controlled by the Soviet Union. The incursion, which occurred from 29 July to 11 August 1938, was founded in the Japanese belief that the Soviet Union had misinterpreted the demarcation of the boundary based on the Treaty of Peking between Imperial Russia and Qing China, and had subsequently tampered with the demarcation markers. Japanese forces occupied the disputed area but withdrew after heavy fighting and a diplomatic settlement.