Complex sentence: Suddenly, Kohler and Hessler are captured by what appears to be a squad of American soldiers, except they are German soldiers in disguise led by Lieutenant Schumacher (Ty Hardin).
Split into simpler sentences: Suddenly, Kohler and Hessler are captured by what appears to be a squad of American soldiers. They are German soldiers in disguise led by Lieutenant Schumacher (Ty Hardin).