Step-by-step explanation:
he first Nazi camp liberated by US forces was Ohrdruf, a subcamp of Buchenwald (the main camp would be liberated one week later). The 4th Armored Division and the 89th Infantry of the Third US Army entered Ohrdruf on April 4, 1945. When soldiers of the 4th Armored Division entered the camp, they discovered piles of bodies, some covered with lime, and others partially incinerated on pyres. The ghastly nature of their discovery led General Dwight D. Eisenhower, Supreme Commander of the Allied Forces in Europe, to visit the camp on April 12, with Generals George S. Patton and Omar Bradley. After his visit, Eisenhower cabled General George C. Marshall, the head of the Joint Chiefs of Staff in Washington, describing his trip to Ohrdruf.
Seeing the Nazi crimes committed at Ohrdruf made a powerful impact on Eisenhower, and he wanted the world to know what happened in the concentration camps. On April 19, 1945, he again cabled Marshall with a request to bring members of Congress and journalists to the newly liberated camps so that they could convey the horrible truth about Nazi atrocities to the American public. Within days, congressmen and journalists began arriving to bear witness to Nazi crimes in the camps.
Hope this helps :D