Sordak, perma effects like blind can be "cured", but they last until cured. Anyway, in therms of versatility, IMO divine casters are far more versatile than arcane casters. Mainly druids on pathfinder(don't know much about then on 5e). An lv 9 animal companion, buffed with few low level spells, can easily reach an AC of 39. An fu***** ancient silver dragon has 38 AC ( http://www.d20pfsrd.com/bestiary/mo...n/metallic-silver/ancient-silver-dragon/ ) and is a CR 19 monster. I an not saying that he is stronger than an ancient silver dragon, but on AC, he is ludicrous powerful. And only considering his animal companion as an "tanker", Druids can heal(an thing that arcane casters can't) and can cast on armor without penalty.

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vometia, about luftwaffe using mostly cannons, in later stages yes, but in earlier stages of WW2, they used both. Bf 110 was they main ground attack aircraft and had 4 machine guns + 2 cannons.