Budapest Operation

"Just like Budapest all over again." "You and I remember Budapest very differently."

- Black Widow and Hawkeye

The Budapest Operation was a mission orchestrated by S.H.I.E.L.D. and undertaken by agents Hawkeye and Black Widow to travel to Budapest.

Background
"Agent Barton was sent to kill me. He made a different call."

- Natasha Romanoff to Loki

After Clint Barton decided to spare and recruit Natasha Romanoff, they formed a partnership, and became some of S.H.I.E.L.D.'s top agents. Throughout their partnership, they were sent on numerous mission together.

Operation
S.H.I.E.L.D. tasked Hawkeye and Black Widow to participate in a mission, sending them to Budapest, Hungary. During the mission, they were involved in a situation that would later be remembered by Black Widow during the Battle of New York, as fighting against the Chitauri groups reminded her of the mission, something Hawkeye disagreed with. They were able to successfully complete the mission, not requiring an extraction plan.

Aftermath
"We're a long way from Budapest."

- Hawkeye to Black Widow

Once they returned from Budapest, details of the mission were kept secret on S.H.I.E.L.D.'s files and the full details were only known by high ranking members. However, in 2014 when HYDRA was discovered in S.H.I.E.L.D., Natasha Romanoff chose to release all of S.H.I.E.L.D.'s secrets on the internet to expose the terrorist organization, including details of her mission in Budapest. The mission would also go on to be incredibly memorable and defining in the the agents' partnership, as Clint Barton would recall it during the Time Heist, pointing out how far they had come since their time working for S.H.I.E.L.D., to then flying through space in a spaceship in the past.