The Japanese Imperial Army had Independent Infantry Brigades, which were formed as garrison units mostly in China late in World War II.

List of Japanese Imperial Army Independent Infantry Brigades

• 1st Independent Infantry Brigade
• 2nd Independent Infantry Brigade
• 3rd Independent Infantry Brigade
• 4th Independent Infantry Brigade
• 5th Independent Infantry Brigade
• 6th Independent Infantry Brigade
• 7th Independent Infantry Brigade
• 8th Independent Infantry Brigade
• 9th Independent Infantry Brigade
• 10th Independent Infantry Brigade
• 11th Independent Infantry Brigade
• 13th Independent Infantry Brigade
• 14th Independent Infantry Brigade

Sources

• 抗日战争时期的侵华日军序列沿革 (Order of battle of the Japanese army that invaded China during the Sino Japanese War)