The Soldier's Knife (強者の暗器 Kyōsha no Anki, lit. Soldier Hidden Weapon) is a Dagger that is introduced in Fire Emblem Fates. The Dagger version of standard Brave weapons, the Soldier's Knife is capable of inflicting two consecutive attacks. In addition to this, the Soldier's Knife is also capable of reducing all the key stats (save for HP) of enemy units post-battle by a substantial amount. The strengths of this weapon are offset by it halving its wielder's Strength post-battle until they initiate another round of combat.
One Soldier's Knife is granted to players when they reach 2,400 battle points in My Castle. One Soldier's Knife may be purchased from a Level 3 Nohrian Armory, and Soldier's Knives may be gained as a jackpot prize at the Lottery.