Welcome to Fire Emblem Appreciation Month! For the entirety of the month, we'll celebrate all aspects related to the series in anticipation of its 25th Anniversary!
Weapons are key instruments for the heroes of the Emblem as they march on to their respective campaigns; what are they without their weapons? Quite useless is what! 
Along with defining classes, these characteristics are what determines each character's niche in Fire Emblem. So for this day's theme, what are your favorite classes and weapons?
Favorite Classes
Nephenee in Radiant Dawn
Soldiers tend to be the common enemy unit in the series, but it's made some very rare appearances on the playable side, namely in Gaiden, Path of Radiance, and Radiant Dawn. In the last two games, they promote to Halberdiers and Sentinels (RD), in which their proficiency with lances truly becomes terrifying. To this day, there's only three of these lance-wielders that are recruitable. Of the three professional users in the weapons triangle, these guys and gals are the more durable of the trio with balanced stats.
Despite it's fairly limited presence, I loved the balanced stats of the class, and for me, it really doesn't make sense that these foot soldiers are mostly omitted for the players. I've always considered lances to be incredibly regal looking weapons, and of course, my natural affinity for a particular character drawn me to them. I'm still hoping that, one day, Intelligent Systems would bring back these common soldiers as a playable class.
Kris in Fire Emblem: New Mystery of the Emblem
Compared to the rest of the purely sword users, Mercenaries offer a great balance of offensive and defensive stats, and their options for ranged attacks grows even more once they promote to Heroes with axes. Combined with evasion near par with the speedier classes, they are some of the most feared units of the series!
In short, these are the ladies and gents players send out by themselves to completely wreck the enemy team.
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Lon'qu in Fire Emblem: Awakening
Myrmidons and Swordmasters are exceptionally lethal units thanks to their unparalleled speed and precision with the sword, and no class is more proficient with them than them! More often than not, their opponents will be blighted by a stellar fury of critical hits, which makes up for their usually sub-par strength. These cool cats are usually a must have for every sortie. 
Favorite Weapons
Favorite Unique Weapon: Ragnell
Ragnell is a unique weapon in that it's one of few swords capable of long-ranged attacks; with a burst of energy, it rends opponents from far away with ease. Blessed by the goddess herself, its significance in Tellius' history is unmatched as it was used in the war against the Dark God nearly a millennium ago.
However, the holy blade also an inherent part of Ike's story in Path of Radiance and Radiant Dawn. He receives Ragnell in the wake of tragedy, and it stays in his possession throughout his adventure in Tellius; being the only weapon that could harm his nemesis, Ike carried this sword into his fated battle.
Favorite common weapon: Killing Edge
Whenever a myrmidon is about, they're usually carrying a Killing Edge, and for good reason! They tend to have decent might at the time of recruitment, but the high amount of critical bonus they bear is what makes them deadly. In the hands of a skilled sword master, this blade will dish out incredible amounts of damage!
Favorite weapon design: Helswath
Like Ragnell, this axe also holds rich history in its respective continent, Jugdral. Wielded by one of the twelve renowned crusaders, only the one that carries the blood of Neir can use Helswath properly. It's powerful of its own might, but it can also be used as a ranged weapon as well!
Here were entrants for the last theme: