On a mission to a HYDRA base in 1944 with the Howling Commandos (minus Bucky for unknown reasons), Captain America stows away on a small merchant boat, when according to his plan it is attacked by a Hydra sub, the Leviathan, as it is a perfect test target. While they are distracted, the Captain swims to the sub and proceeds to enter and attack the crew, wining it for himself and the Commandos, who anxiously wait in a raft. After finding out where the base is via map, they quietly dock in the base, and on Rogers' count they storm out guns-a-blazin', to find it completely deserted. The team decides to split up in groups of two, all but Cap, having already moved to investigate, leaving Dugan alone. After searching, Cap finds a deserted lab that looks like a war had torn through it. Searching