Better Than To Bend (23,494 words) by silentwalrus [AO3]:
Warnings: Graphic Depictions Of Violence
Relationships: Bucky Barnes/Steve Rogers, Peggy Carter/Steve Rogers, Bucky Barnes/Peggy Carter/Steve Rogers
Characters: Howling Commandos
Additional Tags: Relationship Negotiation, Period Typical Attitudes, Period-Typical Language, Non-Period-Typical Attitudes, Canon-Typical Violence, Polyamory, Threesome, Knifeplay, Lipstick, Mild Feminization, Coming Out: PTSD-Ridden WWII Renegade Style, peggy and bucky: goddamn professionals, a beautiful story of inclusivity cameraderie and violence, The Hollow Steve/Dry Sock Storage Superserum Theory, Mean Top Peggy Carter, bucky barnes’ precious little mind being blown out his precious little ears, Do As Peggy Says
Series: Part 1 of Bucky Barnes Gets His Groove Back & Other International Incidents
Summary: In which Sergeant James Buchanan Barnes is tired, hungry and completely failing at not sticking it in the crazy. Also there’s a war going on or something.
aka world war threesome. Fear these queers.