19 photos of the Marine Corps’ pursuit of perfection

America's military is known for its high standards — but of all the sister service branches, the Marine Corps take perfection to another level.

And maintaining that excellence has been no small feat, considering the Corps has served a role in every conflict in US history. That's because the Marines operate on sea, air, and land, and can respond to a crisis in less than 24 hours with the full force of a modern military.

To celebrate the Corps, we've pulled some of their best shots ever.