I like the smell of napalm in the morning!
The Incinerator is a dedicated anti-infantry Nod soldier capable of wiping out squads of infantry with ease. Which makes them great counter against infantry rushes or clearing of enemy emplacements.
But their strength is also their weakness, as they are prone to causing friendly fire and exploding upon death.
Nod Incinerators can eliminate swarms of enemy infantry and Tiberium Lifeforms with ease. However, they are easily overwhelmed by infantry as well. If a Nod Incinerator's backpack was to explode upon death, it could have disastrous results for any other soldiers travelling with him.