Complex sentence: A B-17 (42-30003) of 92nd BG was hit which, according to Knoke, "the Fortress reared like a stricken animal, before falling in steep spirals to the right".
Split into simpler sentences: A B-17 (42-30003) of 92nd BG was hit. According to Knoke, "the Fortress reared like a stricken animal, before falling in steep spirals to the right".