He always rebuked the "existentialist" moniker for that reason. Most would call him an absurdist for his insistence towards finding happiness amidst the absurd indifference of life towards ones aspirations.
Well, he was a part of the resistance against Nazi occupation. Albeit less on the front lines and more on the journalistic side, but nonetheless. I'd say it's valid enough to give him the opportunity to have an existential crisis.
Camus was a moralist; he claimed morality should guide politics. While he did not deny that morals change over time, he rejected the classical Marxist view that historical material relations define morality.[1]
Moralism is a political viewpoint not unlike pragmatism. It doesn't necessarily qualify as a philosophical viewpoint though, as what morals one believes should be informing politics would be dictated by their philosophies.
