Captain America 70th Anniversary Magazine #20 (Winter 2011):
“Case No. 1. Meet Captain America”
by Joe Simon, Jack Kirby, Al Liederman

Captain America 70th Anniversary Magazine #20

Title: “Case No. 1. Meet Captain America”

Medium: comic

Cover date: Winter 2011

Publisher: Marvel
Written by: Joe Simon, Jack Kirby
Art by: Jack Kirby, Al Liederman

7 characters in this story:

(Click links for info about character
and his/her religious practice, affiliation, etc.)
Pub. #
Captain America Captain America (Steve Rogers)
(lead character)
CBR Scale: I Protestant
Redeemers; Secret Defenders...  Marvel Timely 5,992
Winter Soldier Bucky (Bucky Barnes) hero
CBR Scale: U Protestant (nominal)
Kid Commandos; Liberty Legion...  Marvel Timely 395
Professor Abraham Erskine Professor Reinstein (Professor Abraham Erskine) supporting character scientist
  [creator of the Super-Soldier Serum] Marvel 96
Agent X Agent X-13 (Cynthia Glass) supporting character
CBR Scale: M Jewish Bundist
FBI Marvel Timely 6
Heinz Kruger Heinz Kruger villain
CBR Scale: D Nazi
[Captain America's 1st foe; Gestapo spy; killed Dr. Erskine] Marvel Timely 15
General Chester Phillips General Chester Phillips supporting character
  Project: Rebirth (leader); U.S. Army
[involved with Project: Rebirth, Captain America's origin]
Marvel 17
Adolf Hitler Adolf Hitler
(only on cover)
villain real/historical person
CBR Scale: D Nazi
[1st app: Uma Kaeru (1935)] Shochiku Kinema 1,593

This comic was reprinted from: Captain America Comics #1 (Mar. 1941): "Case No. 1. Meet Captain America".

The indicia for this publication identifies it as Captain America 70th Anniversary Magazine #20, but it is not clear what this numbering refers to. What series (or even group of comics) is this issue the twentieth issue of?