Complex sentence: The continual combat missions and replenishments kept her crew awake approximately 22 hours per day and the 2 hours of sleep the crew did get basically consisted of 5 or 10 minutes here and there.
Split into simpler sentences: The continual combat missions and replenishments kept her crew awake approximately 22 hours per day. The 2 hours of sleep the crew did get was normally 5 or 10 minutes here and there.