The Soldier's Knife (強者の暗器 Kyōsha no anki, lit. Strong 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. The strengths of this weapon are offset by it halving its wielder's Strength post-battle until they initiate another round of combat.
- Despite being a Nohrian weapon, no Nohrian class is capable of wielding the Soldier's Knife.