Obscurer is a mobile radar-jamming vehicle that can hide your units from enemy radar. They are very useful to limit the enemy's capability to strike beyond visual range. Do note they have a high energy cost and constantly consume energy to maintain the jamming field.

Use them to help in fights against enemy ranged units and artillery relying on radar - they can't shoot you if they can't detect you!

Be aware even a single hit will temporarily disable jamming ability.