USMC Official LIC 23125 US MARINE CORPS - 1st MARINE DIVISION Challenge Coin This is a great looking 1st Marine Division challenge coin. Coin is about 1 9/16" in diameter. This coin has a 1st Marine Division insignia on front in raised lettering and the Marine Corps logo on the reverse. Coin is contained in an acrylic air tight holder. The 1st Marine Division is a Marine infantry division of the United States Marine Corps headquartered at Marine Corps Base Camp Pendleton, California. It is a subordinate unit of the I Marine Expeditionary Force (I MEF). It is the oldest and largest active duty division in the United States Marine Corps, representing a combat-ready force of more than 19,000 men and women. It is one of three active duty divisions in the Marine Corps today and is a multi-role, expeditionary ground combat force. It is nicknamed "The Old Breed". 1st Marine Division insignia.svg 1st Marine Division insignia Active Full division active 1 February 1941 ? present. 5th Marine Regiment served in World War I Allegiance United States Of America Branch United States Marine Corps Type Infantry Division Role Amphibious Assault Size 19,000 Part of I Marine Expiditionary Force Garrison/HQ Marine Corps Base Camp Pendleton Nickname(s) The Old Breed Blue Diamond Motto(s) No Better Friend, No Worse Enemy March "Waltzing Matilda"