The Japanese and Manchukuoan order of battle for Operation Nekka was:

Kwantung Army

Jehol Operation Force - Field Marshal Baron Nobuyoshi Muto,

• 6th Division (11th & 36th Infantry Brigades) - Lt. Gen. Sakamoto
• 8th Division (4th & 16th Infantry Brigades) - Lt. Gen. Nishi
• 14th Mixed Brigade / 7th Division - Major Gen. Hattori
• 33rd Mixed Brigade / 10th Division - Major Gen. Nakamura
• 4th Cavalry Brigade - Major Gen. Mogi
• 1st Special Tank Company - Captain Hyakutake
  • 11 x Type 89 Medium Tank
  • 2 x Type 92 Combat Cars

Manchukuo Imperial Army

Manchukuoan Force 42,000 men^[1] - Zhang Haipeng^[2]

Manchukuoan units with the Japanese Northern Column 10,000 men^[1]

• Taoliao Army - Zhang Haipeng (concurrent)
  • 7 Detachments( at least 2 are cavalry brigades)^[2]
• National Foundation Army (Manchukuo Preparatory 2nd Corps) - Zheng Guorui^[1]
  • 3 Detachments

Manchukuoan units with the Japanese Eastern Column 15,000 men^[1]

• National Protection Army (Fengtian Province Garrison Corps)^[1] - Yu Zhishan^[3]
• 1st Brigade of the Guard Corps (Manchukuo Imperial Guards) - Li Shoushan^[3]
• National Salvation Army (about 10,000 men)^[1] - Li Jizhun^[4]

5th Army Group - Commander in chief Tang Yulin (governor of Rehe)^[1]

• 55th Army - Tang Yulin
  • 36th Division - Tang Yulin, at Beipiao,
  • 36th Cavalry Regiment - Shao Benliang, at Beipiao, Chaoyang, Zhuluke and Jianping. Shao defected to the Japanese.
  • 31st Brigade - ?, at Heishuizhen-Chifeng
  • Reserve Regiment - ?, at Pingquan-Chengde
  • 36th Artillery Regiment - ?, near Pingzhen
  • 1st Cavalry Brigade - ?, at Qinglianggou
  • 9th Cavalry Brigade - Cui Xingwu, at Kailu. Cui defected to the Japanese.
  • 10th Cavalry Brigade - ?, at Tianshan

6th Army Group - Zhang Zuoxiang (former governor of Jilin)*

• 41st Army - Sun Dianying
  • 117th Brigade - Ding Ting, at Haladaokou, east of Chifeng.
  • 118th Brigade - Liu Yueting, to the north of Chifeng
  • Reinforced 1st Brigade - Xing Yuchou, to the north of Chifeng
• Northeastern Loyal and Brave Army - Feng Zhanhai, to the north of Chifeng
  • 10th Cavalry Division - Deng Wen
  • 11th Cavalry Division - Tan Zixin
  • 12th Cavalry Division - Wu Songlin
  • 21st Cavalry Brigade - Guo Fenglai
  • 1st Infantry Brigade - Tang Zhongxin

4th Army Group - Wan Fulin* (former chairman of Heilongjiang)

• 53rd Army - Wan Fulin
  • 130th Division - Zhu Hongxun, at Yebaishou - Dachengzi
  • 119th Division - Sun Dequan, Dachengzi – Lingnan
  • 129th Division - Wang Yongsheng, Pingquan – Sanshijia
  • 116th Division - Miao Chengliu, Lamadong – Yiyuankou
  • 106th Division - Shen Ke, Daordeng – Tangdaohe
  • 11th Artillery Regiment, Lingyuan
  • 108th Division - Yang Zhengzhi, East of Lingnan on February 27^{[citation needed]}