What offensive task is geared towards completely neutralizing an enemy force?

The offensive task that is geared towards completely neutralizing an enemy force is "defeat." This task involves engaging enemy forces with the intent to destroy or incapacitate them so they can no longer pose a threat. The objective is to eliminate the enemy's combat capability through aggressive action and sustained offensive operations.

In contrast, the other tasks listed serve different purposes in military operations. For example, breaching focuses specifically on creating a gap in enemy defenses to allow for further movement or assault. Seizing is about taking control of a specific location or objective, while suppressing refers to reducing the enemy's ability to engage effectively, but not necessarily achieving total neutralization. Thus, defeat is the most comprehensive task aimed at rendering the enemy completely ineffective in a conflict.