The Pincer Movement is a standard and classic military maneuver in which two groups attack the enemy army on both sides, creating a 'pincer' formation. This is used to outflank and surround the enemy to destroy it or force it to surrender.
This tactic is still valid in modern times and is usually applied toward mechanized forces such as tanks. It is also practiced by the Imperial Army, by using their own infantry and horse cavalry to surround their enemies and overwhelm them by sheer force of numbers. However, unlike their previous opponents, their advantage in human wave numbers is negated by the sheer firepower and heavily-armored tanks of the JSDF.
Ironically, though the tactic is ineffective for the Imperial Army due to their primitive weaponry, the strategy is heavily used by the JSDF during their blitzkrieg offensive.