Complex sentence: Fuchida had received a long distance call from Navy Headquarters asking him to return to Tokyo and returned to Hiroshima the day after the bombing on a party sent to examine and assess the damage of the bomb.
Split into simpler sentences: Fuchida had received a long distance call from Navy Headquarters asking him to return to Tokyo. He returned to Hiroshima the day after the bombing on a party sent to examine and assess the damage of the bomb.