All month long we will feature brand-new Cool Avengers and X-Men Comic Book Moments in celebration of their fiftieth anniversaries this month. Here is an archive of all the past cool comic moments that I've featured so far over the years.

Today we look at Captain America avenging the death of Bucky in battle against Baron Zemo...

Captain America was brought back in Avengers #4. Only two issues later we met Baron Zemo, the villain who we found out was responsible for the death of Captain America's sidekick, Bucky (and for Cap being stuck in suspended animation). Zemo formed the Masters of Evil and they clashed with Cap and the Avengers a number of times in just a few issues. With Avengers #15, though (by Stan Lee, Jack Kirby, Don Heck and Georgr Roussos), Lee was getting ready to redo the title, so he decided to wrap the Cap/Zemo plot up once and for all. The issue opens with Zemo kidnapping Cap's new friend (who he sort of sees as a new Bucky) Rick Jones. While the rest of the Avengers tackle the Masters of Evil, Cap uses a borrowed special jet plane to track Zemo down to gain his vengeance...

You have to love how CALM Cap is with the whole thing! So badass.