Lessons from the spiderweb

Network Rail plans to introduce new drones this year that can fly beyond the line of sight of an operator. PAUL CLIFTON finds out why that could revolutionise the way the railway is managed

In modern conflicts, smartphones have become an essential tool for civilians and soldiers

DEFENSE

Sir Barney White-Spunner discusses his latest book Nations in Arms , in which he analyses how five armies across centuries have found success on and off the battlefield, and helped shape Europe

From the Cold War to modern operations, the threat beneath the waves has been steadily building, and could be about to escalate

Originally supplanting paratroops as a means of delivering soldiers precisely onto the battlefield, air assault became the standard for strategic planning in the Cold War. But as air threats have escalated, has peer-on-peer conflict made the tactic obsolete?