Simplify the following text for a Grade 13 native English-speaking person.
Original: Princess Alice relinquished her titles of Princess of Saxe-Coburg and Gotha and Duchess of Saxony , whilst her brother Charles Edward , Duke of Saxe-Coburg and Gotha , who held a commission in the German Army , was stripped of his British titles .
Simplified: Princess Alice gave up her titles of Princess of Saxe-Coburg and Gotha and Duchess of Saxony , but her brother Charles Edward , Duke of Saxe-Coburg and Gotha , who held a commission in the German Army , did not and was stripped of his British titles instead .