Complex sentence: The secretiveness of the maneuver didn't last long, but Friedman kept the more commercial Capa for his own name, and Pohorylle adopted the professional name of Gerda Taro, after the Japanese artist Tarō Okamoto and Greta Garbo.
Split into simpler sentences: The secretiveness of the maneuver didn't last long but Friedman kept the more commercial Capa for his own name. Then, Pohorylle adopted the professional name of Gerda Taro, after the Japanese artist Tarō Okamoto and Greta Garbo.