Before becoming the engineered superhero called Captain America, Steve Rogers attempts to join the Army five times in five cities, only to be rejected for being a pipsqueak with a ton of heart but not nearly big enough biceps. In a similar series of false starts, we've been treated to a slew of teasers for "Captain America: The First Avenger," from a 30-second Super Bowl spot to a bunch of seconds-long video snippets parceled out over the last few days.

Now, finally, we're getting a shot of cinematic super-serum with the Marvel adaptation's first full trailer. Here are our picks for the five coolest moments:

The Shield ... Kinda
Here we see Rogers (Chris Evans) in pre-conversion twerp mode. Chased into an alley, he attempts to defend himself with a trashcan lid — a none-too-subtle nod to the red-white-and-blue shield he'll soon wield as the Captain. Sure, he's a scrawny fellow, but he's brave. And as Dr. Abraham Erskine (Stanley Tucci) will tell Steve before transforming him into a superhero, "A weak man knows the value of strength, knows the value of power." In terms of historical context, this shot also gives us a glimpse of around when the story begins. A poster in the alley shows the date: May 29, 1943.

Meet Your Super-Serum
So it's that goopy blue stuff that transforms Rogers into a super-solider. We see Erskine in the laboratory, as well as Howard Stark (Dominic Cooper), who just so happens to be the father of a certain iron-suited hero played in other Marvel movies by Robert Downey Jr. The serum doesn't look that pleasant going in, but what a difference it makes: Rogers goes from zero to world-saving hero.

Captain Action
Listen, it's hard out there for a super-solider. Even when an Army colonel (Tommy Lee Jones) is driving at top speed in a convertible and the Captain looks like he's about to jump out and whup some Nazi butt, he pauses for a little smooch from Peggy Carter (Hayley Atwell). Pimp!

Army of the Damned
Check them out in all their blue-glowing glory: the HYDRA army controlled by Red Skull (Hugo Weaving), Hitler's head honcho of weaponry and general evilness. It's these soldiers who will face off against the Captain and his crew with the fate of the world in the balance.

The Boys
We'd sleep easier knowing this collection of dudes — Captain America and the much-hyped Howling Commandos — is protecting the nation. In addition to the Captain, you've got sidekick Bucky Barnes (Sebastian Stan), Union Jack (JJ Field) and Dum Dum Dungan (Neal McDonough). That's a hero shot if we've ever seen one. "It's an amazing costume," Evans told us last year of his look. "Given the fact that his costume is red, white and blue, and it's tight, and it could be kind of flash and over the top — and given the fact that the movie takes place in the '40s and '50s — they've done a really good job of making it look really cool."

What were your favorite moments? Share them in the comments below!

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