HISTORY: #OnThisDay: Nov. 6, 1944 the 1st Infantry Division entered the U.S. Army's longest single battle ever fought; the Battle of Hurtgen Forest. The Big Red One entered the battle on the border of Germany and Belgium during WWII and it was the longest battle fought on German soil. We will never forget the bravery and perserverance of the Big Red One Soldiers during this battle. #DutyFirst! #Victory | 1st Infantry Division

THE "BIG RED ONE" Organized in 1917 for duty on the Western Front in World War I, the 1st Infantry Division has seen action in all American wars, except the Korean War, since 1917 and has fought honorably in all of its service. #ArmyHeritage | U.S. Army

Here's some footage of TD10-TD14 of 2nd Brigade Combat Team, 1st Infantry Division, Fort Riley, Kansas, at the National Training Center during Decisive Action Rotation 17-06. Operations Group, National Training Center 11th Armored Cavalry Regiment-Blackhorse U.S. Army U.S. Department of Defense (DoD) U.S. Army Forces Command (FORSCOM) 2nd Armored Brigade Combat Team, 1st Infantry Division 1st Infantry Division | Operations Group, National Training Center

The 1st Infantry Division conducted an operational decontamination lane with support from 5th Squadron, 4th Cavalry Regiment and 2nd Brigade Combat Team, to train and develop leaders on decontamination assets and procedures during Large-Scale Combat Operations. The training took place today 8 Sept. 2025. (U.S. Army video by Spc. Autumn Johnson) #Army250 #BigRedOne #thiswelldefend | 1st Infantry Division