Complex sentence: McGovern married Eleanor Stegeberg on October 31,1943 during a three-day leave (lonely and in love, the couple had decided to not wait any longer); his father presided over the ceremony at the small Methodist church in Woonsocket.
Split into simpler sentences: McGovern married Eleanor Stegeberg on October 31,1943 during a 3-day leave. Lonely and in love, the couple decided to not wait any longer and married in a ceremony presided over by his father at the small Methodist church in Woonsocket.