What is shore party?
shore party meaning in Military terminology / glossary / dictionary is:
A task organization of the landing force, formed for the purpose of facilitating the landing and movement off the beaches of troops, equipment, and supplies; for the evacuation from the beaches of casualties and enemy prisoners of war; and for facilitating the beaching, retraction, and salvaging of landing ships and craft. Also called beach group. See also beachmaster unit; beach party; naval beach group.
Source: JP 3-02