Semper Fi! Are you looking for Marine shirts? You came to the right place because Trend Merch has them. First in, last out. The Marine Corps was established in 1775 and is tasked with performing expeditionary and amphibious operations through combined arms. Marine Corps shirts let you rep your branch—and look good doing it. With a variety of colors and styles to choose from, we have the perfect shirt for you. Whether you’re a veteran or just proud of those who serve, our Marine Corps shirts will show everyone your patriotism.