*" the German troops moved the POWs westward into Germany in order to be clear of the Soviet advance from the east" - "in order to avoid the Soviet advance"? 
 *"Peter and George walked through an opening in the prisoner compound fence and ran towards Frankfurt in the hopes of reaching the American lines." - to check, I read this as they left the compound, (literally) ran towards Frankfurt, and were then (presumably quite quickly) picked up? 
 *"After surviving the bombardments in Nuremberg, the POWs were resettled in a camp near Munich. " - You could simplify to "After surviving the bombardment, the POWs..." - the Nuremberg context is established in the previous paragraphy. 
 *"However, they were given the opportunity to return to Nuremberg as wounded soldiers to obtain treatment.[20] The POWs agreed to return to Nuremberg because it was closer to the American lines." > "They were given the opportunity to return to Nuremberg, however, as wounded soldiers to obtain treatment; the POWs agree, because it was closer to the American lines." It would avoid repetition and be a little shorter. 
 *"Juskalian was flown to Paris, France where he would present himself at the military post and request financial assistance." - "he presented himself" (active, vice conditional) 
 *"An officer, who was already acquainted with George's older brother Richard (Dikran)" - "who knew George's older brother"? 
 *"When asked if he was related to Richard, George responded by saying Richard was his older brother and upon hearing this, he was given all the provisions he needed." - I thought this seemed overly literal/long. How about "George confirmed that Richard was his brother, and he was then given all the provisions he needed."? 
 *"the staff and faculty of The Infantry School" - I don't think the "The" needs a capital here, but happy to be corrected! 
 *"While at the School, he availed himself of the opportunity of taking airborne training and qualifying as a parachutist." > "While at the School, he took airborne training and qualified as a parachutist."? (shorter)