Complex sentence: Prisoners regardless of ideology often taunted their captors, such as saluting with Sieg Heils when forced to attend the lowering of the United States flag, and many became upset when Jewish American officers supervised them.
Split into simpler sentences: Prisoners regardless of ideology often taunted their captors, such as saluting with Sieg Heils when forced to attend the lowering of the United States flag. Many prisoners became upset when Jewish American officers supervised them.