The graphics during the cheesy but patriotic and memorable signature tune is a clue to what to expect from this 1966 cartoon series, YES 1966!
Basically it is a cartoon version of several tales involving Captain America taken from the early years of Tales of Suspense and The Avengers.
For an old Marvelite like me it was great to see animated versions of several of Cap's early triumphs.
Included here are several tales set in WWII involving The Red Skull who wears a sanitised version of the costume he wore in the original comic and Adolf Hitler's role in the Skull's origin has been replaced by some generic Nazi figure. These tales also feature Cap's sidekick Bucky Barnes. From the 1960's C.A. takes on Batroc and the Red Skull again with his Sleepers and the Cosmic Cube, featuring A.I.M.
It also includes several tales from The Avengers. There is an edited version of Cap's silver age re-appearance in Avengers #4 (minus the Sub-Mariner's role) and other tales involving Zemo and his Masters of Evil (The Black Knight, Radioactive Man and the Melter), the Commisar, Super Adaptoid, Enchantress and Power-Man and ending with the Sworsdman and the Mandarin. Several versions of the Avengers are seen with Thor, Iron Man, Giant-Man and The Wasp, Hawkeye, Quicksilver and the Scarlet Witch.....and Rick Jones and Jarvis. The only downside of the Avengers tales is the daft voice given to Giant-Man. Just watch how the Wasp's costume changes over even this short period of time, a real 1960's fashion icon.
I loved watching this and kept the relevant Marvel Essentials volumes by my side to follow the story on the page as well as the screen. It brings out the tensions within the Avengers quite well.
All 13 episodes are included here and I highly recommend it, just don't expect Pixar quality animation.