Attack on HYDRA Headquarters

The Attack on HYDRA Headquarters was a battle between HYDRA forces and the Strategic Scientific Reserve at HYDRA Headquarters.

Background
After taking out many HYDRA bases and thwarting many of their attacks, Captain America, the Howling Commandos, and the Strategic Scientific Reserve went to attack the Schnellzug EB912. In the attack, Gabe Jones succeeded in capturing Arnim Zola, but Bucky Barnes, Steve Rogers' best friend, fell off the train and down the mountain and was presumed dead. After Zola told Colonel Chester Phillips that Red Skull was planning to attack almost everywhere on Earth and the location of HYDRA Headquarters, the plan to finally take down HYDRA once and for all had begun.

Battle
Captain America approached HYDRA Headquarters on his motorcycle. Before reaching the gate, Rogers was spotted by six HYDRA soldiers on motorcycles. Rogers uses his motorcycles weapons to kill the soldiers and continues to the gate. With the gate blockaded by a HYDRA Light Armored Vehicle and several cannons, Rogers attaches his shield to the front of his motorcycle to block the cannon fire before destroying the armored vehicle with his motorcycle's rocket launchers. After jumping the gate and setting the motorcycle's self-destruct, Rogers points it towards the door and jumps off. The motorcycle successfully blows the door and Rogers begins to fight the HYDRA soldiers. After taking out several soldiers, Rogers is cornered by to soldiers with flamethrowers and then surrounded and forced to surrender.

The soldiers take Rogers to Red Skull who plans to kill him but is interrupted by the Howling Commandos zip-lining through the window. Red Skull retreats down the hall while the Commandos kill the HYDRA soldiers in the room. James Montgomery Falsworth tosses Rogers his shield and he chases Red Skull while Jim Morita radios Colonel Chester Phillips to begin the ground assault. The Strategic Scientific Reserve troops take out the HYDRA soldiers outside and enter the base. Rogers is cut off from Red Skull by a HYDRA soldier with a flametrower but is saved by Peggy Carter.

Rogers follows Red Skull to the hanger bay but he has already boarded the Valkyrie and begins to take off. Rogers attempts to catch the plane on foot but is unable to catch it. Phillips and Carter arrive in Red Skull's Coupe and pick up Rogers. Phillips drives the car up to the landing gear and Rogers kisses Carter before jumping onto the plane. Phillips slams on the brakes and manages to stop the car just before it falls off the cliff. The SSR troops defeat the remaining HYDRA personnel and capture the base.

Aftermath
After Captain America boarded the Valkyrie and the Strategic Scientific Reserve captured HYDRA Headquarters, Rogers successfully stopped Red Skull and crashed the Valkyrie in the Arctic.