Yes, non-Marines can join or support the Royal Gorge Marine Corps League in a couple of ways. While regular membership is primarily for current and former Marines and FMF Corpsmen, the League also offers Associate Membership for individuals who have not served in these capacities but wish to support the League's objectives and activities.

Associate Members are valued for their support and dedication to the League's mission, and they play a crucial role in the organization's community service and veteran support initiatives. Additionally, non-Marines can support the Detachment through volunteerism, donations, and participating in public events hosted by the League, such as fundraisers, community service projects, and awareness campaigns.