Steve Rogers: Captain America v1 #1

[Jason Doty]

FB #1, 1926

Joseph Rogers
Sarah Rogers
Steve Rogers
Elisa Sinclair

FB #2

a young Robbie Dean Tomlin
Robbie's parents

Sometime later

Robbie Dean Tomlin
a police officer

Sometime later

Robbie Dean Tomlin
Aryan Nation members in prison

Sometime later

Robbie Dean Tomlin
Robbie's boss at a Big-Box retailer

Sometime later

Robbie Dean Tomlin and his addict girlfriend

Sometime later

Robbie Dean Tomlin
people attending an Addicts Anonymous meeting

Sometime later

Robbie Dean Tomlin
Robbie's former cellmate

Later

Robbie Dean Tomlin
Robbie's former cellmate
Hydra recruits
Red Skull

Sometime later

Robbie Dean Tomlin
Hydra recruits

Sometime later

Robbie Dean Tomlin
Hydra recruits and a man they beat to death

Sometime later

Robbie Dean Tomlin
Hydra Operatives

FB #3

Captain America (Rogers)
Hydra Operatives that have hijacked a train

FB #4, 1926

Sarah Rogers
Steve Rogers
Elisa Sinclair
patrons and staff at a restaurant

FB #5

Baron Zemo

FB #6

Baron Zemo
Dr. Erik Selvig

FB #7

Kobik

FB #8, 1926

Sarah Rogers
Steve Rogers
Elisa Sinclair
citizens of New York

FB #9, 1926

Sarah Rogers
Steve Rogers
Elisa Sinclair

Main Story

Captain America (Rogers)
Hydra Operatives that have hijacked a train including Robbie Dean Tomlin
Sharon Carter
SHIELD Agents
Whisperer (Rick Jones)
Jack Flag
Free Spirit
another cell of Hydra Operatives

Five hours later

Captain America (Rogers)
Sharon Carter
SHIELD Agents aboard a Helicarrier-BTS

Later

Whisperer (Rick Jones)
Jack Flag
Free Spirit
Maria Hill
Sharon Carter

Sometime later

citizens of Bagalia
Baron Zemo
Firebrand
Plant Man
Flying Tiger
Captain America (Rogers)
Jack Flag
Free Spirit
Doctor Erik Selvig

[Michael]

Note that the flashbacks to 1926 turn out in issue 2 to be

Spoiler:

Kobik's altering Steve's past so that he'll ally himself with the Skull. It's not clear if Kobik just changed Steve's memory or actually changed reality retroactively.