Complex sentence: However, after the Great Patriotic war the artillery plant was reconstructed in 1946 for production of rockets, launch vehicles and spacecraft under the guidance of Russian scientist and academician Sergei Korolyov to consolidate the activities of many people in the Soviet space exploration programme.
Split into simpler sentences: However, after the Great Patriotic war the artillery plant was reconstructed in 1946 for production of rockets, launch vehicles and spacecraft under the guidance of Russian scientist and academician Sergei Korolyov. He consolidated the activities of many people in the Soviet space exploration programme.