“For decades the military has been using video-game technology,” says Nina Huntemann, associate professor of communication and journalism at Suffolk University in Boston and a computer games specialist. “Every branch of the US armed forces and many, many police departments are using retooled video games to train their personnel.”

Like much of early computing, nascent digital gaming benefited from military spending. The prototype for the first home video games console, the 1972 Magnavox Odyssey, was developed by Sanders Associates, a US defence contractor. Meanwhile, pre-digital electronic flight simulators, for use in both military and civilian training, date back to at least the second world war.

Later, the games industry began to repay its debts. Many insiders note how instruments in British Challenger 2 tanks, introduced in 1994, look uncannily like the PlayStation’s controllers, one of the most popular consoles of that year. Indeed, warfare’s use of digital war games soared towards the end of the 20th century.