While putting together Peggy's ground forces costume, I researched the story of this outfit. The location of HYDRA's main base was in the Swiss Alps. Carter managed the troop movements of the Commandos and ground forces as they stormed the base, working with General Phillips to do so. They initially appeared to win the day, capturing the base and with Rogers seemingly defeating the Red Skull. Peggy uses a M1928A1 Thompson firearm.
Growing up in Los Angeles in the 70s/80s we visited Disneyland on a regular basis and often after school, before "Annual Passes".