This is the Battle of Pingxingguan order of battle during the Second Sino-Japanese War.

China Chinese units mentioned defending Pingxingguan: 6th Army Group - Yang Ai-yüan 33rd Army - Sun Ch'u 3rd Independent Brigade - Chang Chen-yü 8th Independent Brigade - Meng Hsien-chi 34th Army - Yang Ai-yüan (concurrent) 196th Brigade - Chiang Yü-chen 203rd Brigade - Liang Chien-t'ang 71st Division - Kuo Tsung-fen 202nd Brigade - Ch'en Kuang-tou 214th Brigade - Chao Chin New 2nd Division - Chin Hsien-chang 7th Army Group - Fu Tso-i 35th Army - Fu Tso-i (concurrent) 211th Brigade - Sun Lan-feng 218th Brigade - Tung Ch'i-wu 61st Army - Ch'en Ch'ang-chieh 101st Division - Li Chün-kung 201st Brigade - Wang P'i-jung 213th Brigade 7th Independent Brigade - Ma Yen-shou 434th Regiment - Ch'eng Chi-hsien 17th Army - Kao Kuei-tse (from 7th Group Army) 84th Division - Kao Kuei-tse (concurrent) 250th Brigade - Liu Ta-lu 251st Brigade - Kao Chien-pai 21st Division - Li Hsien-chou 61st Brigade - Ts'ui Chen-tung 63rd Brigade - Lü Hsiang-yün 73rd Division - Liu Feng-pin (from 33rd Army) 197th Brigade - Wang En-t'ien 212th Brigade - Ko Wan-pang 15th Army - Liu Mao-en 64th Division - Wu Ting-lin 191st Brigade - Hsing Chung-ch'ing 192nd Brigade - Yang T'ien-min 65th Division - Liu Mao-en (concurrent) 194th Brigade - T'ao Pei-ch'en 195th Brigade - Ma Ch'i-chen 19th Army - Wang Ching-kuo 70th Division - Wang Ching-kuo (concurrent) 215th Brigade - Tu Kun 72nd Division - Tuan Shu-hua 217th Brigade - Liang Ch'un-p'u 209th Brigade - Tuan Shu-hua (concurrent) Artillery Command - Liu Chen-heng 23rd Artillery Regiment - Li Hsi-chiu 28th Artillery Regiment - Tung Tse-shan 24th Artillery Regiment 27th Artillery Regiment 115th Division – Lin Biao, deputy Nie Rongzhen (from 18th Army Group – 8th Route Army) 343th Brigade - Zhou Jianping 685th Regiment – Yang Dezhi 686th Regiment - Li Tienyou 344th Brigade - Xu Haidong 687th Regiment - Zhang Shaodong 688th Regiment – ? (in reserve) 7th Group, (light bombers/scout-attack reconnaissance), O2U Corsair Scouting-Attack planes, O-2M Reconnaissance-Attack planes - Ch'en Ch'i-hsia

Japan Attacking Pingxingguan: 21st Brigade, 5th Japanese Division

Japanese forces in the ambush battle of Pingxingguan: 3rd Battalion, 21st Regiment, 21st Brigade, 5th Japanese Division Supply troops of the 21st Regiment - Lieutenant 高桥义夫 15 supply troops and 70 escorts in 70 horse-drawn vehicles with 50 horses, filled with clothes, food, ammunition and proceeded westwards towards Pingxingguan. Japanese 6th Depot 2nd Company motorized supply column - First Lieutenant 矢岛俊彦 176 men in 50 trucks 3rd Company motorized supply column - Major 中西次八 ? men in 30 trucks

References

Sources Hsu Long-hsuen and Chang Ming-kai, History of The Sino-Japanese War (1937-1945) 2nd Ed., 1971. Translated by Wen Ha-hsiung, Chung Wu Publishing; 33, 140th Lane, Tung-hwa Street, Taipei, Taiwan Republic of China. Description (in Chinese) of the Battle of Pingxingguan in the on line version of the book: 中国抗日战争正面战场作战记 (China's Anti-Japanese War Combat Operations) by 郭汝瑰 (Guo Rugui), Jiangsu People's Publishing House, 2005-7-1, 华北作战平型关大捷 1(North China Battles, the Pingxingguan victory 1) 华北作战平型关大捷 2(North China Battles, the Pingxingguan victory 2) a more recent study (in Chinese) 关于平型关战斗的史实重建问题 "On the reconstruction of the facts of the Battle of Pingxingguan" by Professor Yang Kui Song A partial translation of Prof. Yang Kui Songon's article on Axis History Forum: The Battle of Pingxinguan 1937 Pingxingguan Campaign

旧日军档案中的平型关大捷