Not every shift in infantry tactics comes from better equipment. Some changes emerged because weapons failed to perform as intended, forcing troops to adapt in order to survive and remain effective.

Russian forces in Ukraine are learning that tactics based on “brutality” and quantity over quality can improve their fortunes, according to a 170-page report put out by the U.S. Army this month.

The Indian Army plans to roll out Integrated Battle Groups, starting with four IBGs under the XVII Corps near the China ...