Pair of blue and silver collar tabs for a Luftwaffe Hauptmann [Captain] acquired by a US soldier

Two collar badges embroidered with birds and oak leaves from a Luftwaffe Hauptmann's uniform acquired by 19 year old David C. Porter during his service as a soldier in the US Army in Germany from February 1945 to July 1946. The tabs would have been worn in pairs on the collar points of a uniform shirt or jacket to distinguish military branch and rank. David was deployed in February 1945 to join troops of the 102nd Infantry Division in combat in Germany. By the end of the war in May, David was a mortar crew chief for Company A, 26th Infantry Regiment. David and other members of the 102nd were selected to serve as guards for the International Military Tribunal at Nuremberg. Its purpose was to seek justice for crimes against humanity, evidenced by the Holocaust, perpetrated by Nazi Germany. David was assigned to guard prisoners being prosecuted during the Trial of Major German War Criminals for crimes against peace, war crimes, crimes against humanity, and conspiracy to commit these crimes. David was promoted to Sergeant in September. He guarded the defendants in their cells and then was assigned to stand guard in the courtroom during the proceedings. David returned to the US and was honorably discharged in July 1946. The trial lasted from November 1945 to August 1946. Verdicts were delivered on October 1, 1946: twelve defendants were sentenced to death; three to life imprisonment; four to prison terms ranging from 10-20 years; three were acquitted.