Swarms of drones have been operated underwater on the sea and in the air in a first for the UK armed forces. Royal Marines Commandos have been carrying out the training raids on missile and radar installations both at the Electronic Warfare Tactics facility at RAF Spadeadam in Cumbria and at Lulworth Cove in Dorset. A navy spokesman said: “In a first for UK Defence, a group of six medium-heavy lift drones were operated in one autonomously controlled swarm from a single ground control station. 40 Commando using a Malloy TRV150 to deliver supplies onto the battlefield during an exercise (MoD/PA)