The act was part of the American Cold War strategy of containment. The act had a number of sections. Most importantly it promised defense assistance to any ally that might be attacked by the Soviet Union, or one of its allies.
It also cut off all aid and economic assistance to any country that traded in strategic materials with the Soviet Union or its allies. The act covered a wide range of materials needed for the production of weapons, and was especially focused on anything that could aid atomic weapons research and construction.
Support included massive financial aid, material supply from the US Army (uniform, helmet, rifle, tanks), US Navy (carrier Belleau Wood/Bois Belleau), the US Airforce (twelve Fairchild C-119, fighters, bombers and maintenance crews) and the CIA (twenty four pilots of the CAT) from which two pilot were killed in action during the battle of Dien Bien Phu.