Business

Swiss army backs home-grown IM service amid privacy concerns

The Swiss army has told its ranks to stop using foreign instant-messaging services like WhatsApp, Signal and Telegram for official communications. Instead, it's opting for a Swiss alternative—in part over concerns about ...

Robotics

Israeli firm unveils armed robot to patrol volatile borders

An Israeli defense contractor on Monday unveiled a remote-controlled armed robot it says can patrol battle zones, track infiltrators and open fire. The unmanned vehicle is the latest addition to the world of drone technology, ...

Engineering

Helicopter-mounted device measures methane in ship exhaust

Researchers have developed a new gas sensor that is compact and lightweight enough to monitor emissions in ship exhaust from an airborne vehicle. The device uses mid-infrared supercontinuum gas spectrometry to simultaneously ...

Energy & Green Tech

Biocrude passes the 2,000-hour catalyst stability test

A large-scale demonstration converting biocrude to renewable diesel fuel has passed a significant test, operating for more than 2,000 hours continuously without losing effectiveness. Scientists and engineers led by the U.S. ...

Robotics

Researchers expand study of ethics, artificial intelligence

The Army of the future will involve humans and autonomous machines working together to accomplish the mission. According to Army researchers, this vision will only succeed if artificial intelligence is perceived to be ethical.

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Army

An army (from Latin arma "arms, weapons" via Old French armée, "armed" (feminine), in the broadest sense, is the land-based military of a nation or state. It may also include other branches of the military such as the air force via means of aviation corps. Within a national military force, the word army may also mean a field army an army composed of full-time career soldiers who 'stand over', in other words, who do not disband during times of peace. They differ from army reserves who are activated only during such times as war or natural disasters.

In several countries the army is officially called the land army to differentiate it from an air force called the air army, notably France. In such countries, the word "army" on its own retains its connotation of a land force in common usage. The current largest army in the world, by number of active troops, is the People's Liberation Army of China with 2,250,000 active troops and 800,000 reserve personnel followed by the Indian Army with 1,325,000 active troops and 2,142,821 reserve personnel.

By definition, irregular military is understood in contrast to regular armies which grew slowly from personal bodyguards or elite militia.

This text uses material from Wikipedia, licensed under CC BY-SA