Complex sentence: Moore remained as Major-General Commando Forces to cover for Pringle while he recovered, and was handing over to the recuperated Pringle when Argentina invaded the Falkland Islands on 2 April 1982.
Split into simpler sentences: Moore remained as Major-General Commando Forces to cover for Pringle while he recovered. Moore was handing over to the recuperated Pringle when Argentina invaded the Falkland Islands on 2 April 1982.