Some people spend an entire lifetime wondering if they've made a difference.
The Marines don't have that problem. 1997 Battles between the military services probably are almost as old as war. Although a country's armed forces fight on the same side, they often compete for weapons, money, attention, and prestige. According to a refrain from a song sung in the movies and maybe on the bases, The Navy gets the gravy, but the Army gets the beans. Annapolis play the Army-Navy game.