Complex sentence: In 1977 the regiment arrived in West Berlin again, and then in 1979 once more in the midst of the volatile situation in Northern Ireland, they lost Guardsman Paul Fryer to a booby trap bomb.
Split into simpler sentences: In 1977 the regiment arrived in West Berlin again. In 1979 while the regiment was once more in the volatile situation in Northern Ireland, they lost Guardsman Paul Fryer to a booby trap bomb.