unknown, but some possibilities recorded here "Psychedelic Cookie" – Used during the Vietnam War in reference to its shoulder patch. 10th Mountain Division "Mountaineer" ”Fighting Beer Keg” 12th Infantry Division "Carabao" 23rd Infantry Division "Americal" – At one point in time this was the official Divisional designation, when it was redesignated as the 23rd Infantry Division, Americal became the divisional nickname. Originally formed in World War II out of separate American National Guard units on the island of New Caledonia, hence the origin of the name. 24th Infantry Division "Taro Leaf"; 25th Infantry Division "Tropic Lightning" – Official (adopted August 3, 1953). In 1942 the division was ordered to deploy to Guadalcanal to relieve U.S. Marines there; only 31 days were required to accomplish the mission and earned the division its official designation. The Division patch is a taro leaf (indicating Hawaii, where the division was formed), and a lightning bolt, "representative of the manner in which the Division performs its allotted assignments." "Electric Strawberry" – so called because the shoulder patch taro leaf resembles a strawberry with a lightning bolt on it. 26th Infantry Division – "Yankee"; This is today's 26th Maneuver Enhancement Brigade. 27th Infantry Division – "Empire," a legacy of the 27th Armored Division. "O'Ryan's Roughnecks," a reference to the first division commander, John F. O'Ryan. "New York Division." – Many members were part of the New York National Guard. The abbreviation N.Y.D. can be seen in the division shoulder sleeve insignia. The insignia also contains an "O" for O'Ryan, as well as a depiction of the Orion constellation as a pun on O'Ryan's name. This is today's 27th Infantry Brigade Combat Team. 28th Infantry Division "Keystone" – The badge is a red keystone; the division was formed in Pennsylvania, the "Keystone State" "Bloody Bucket" – So called by German soldiers in World War I and World War II because the keystone shaped patch was red and resembled a bucket. "Iron Division" – From a comment by John J. Pershing following the 1918 Battle of Château-Thierry 29th Infantry Division "Blue and Gray" – In 1919, when shoulder sleeve insignia were first authorized, the division consisted of two masses of men, one from the North (represented by blue) and the other from the South (represented by gray). 30th Infantry Division – "Old Hickory"; This is today's 30th Heavy Brigade Combat Team. 31st Infantry Division – "Dixie"; 32nd Infantry