Complex sentence: During the war, Germany produced the "Landwasserschlepper" and "Schwimmwagen", and in the' 50s, the Soviets developed the GAZ 46, BAV 485, and PTS.
Split into simpler sentences: During the war, Germany produced the "Landwasserschlepper". In the 1950s, the Soviets developed the GAZ 46, BAV 485, and PTS.