(U.S. Army/Staff Sgt. True Thao)

Army researchers have devised a method to produce ceramic body armor, lightweight but strong, from a 3D printer. Except that 3D printers are meant to print out knickknacks, not flak jackets — which meant that engineers had to hack into the printer to get the job done.

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(Wikimedia Commons/Ein Dahmer)

Germany is planning to install a laser cannon on its warships.

A K-130 class corvette next year will receive a prototype high-energy laser weapons system, or HELWS, for a two-year demonstration, according to German media and European defense contractor MBDA, whose Rheinmetall subsidiary will build the device.

"The HELWS demonstrator for this opportunity will be optimized for the counter-unmanned aerial system (CUAS) threat spectrum, including drones, mini-drones and micro-drones," MBDA spokesman Günter Abel told the National Interest.

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If the Pentagon had to take Consumer Math class in high school, they'd flunk.

The U.S. military—correction, the U.S. taxpayer—is spending more money to buy fewer weapons. The reason? Poor acquisition practices, according to a report by the Government Accountability Office (GAO).

"DOD's 2018 portfolio of major weapon programs has grown in cost by $8 billion, but contains four fewer systems than last year," GAO found.

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Good pay, bad food and corruption. That's the life of a Russian mercenary in Syria, according to one veteran who's glad to be out of there.

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Just before he put the gun to his head and pulled the trigger, the German officer penned a final note.

"For a captain with a sense of honor, it goes without saying that his personal fate cannot be separated from that of his ship," wrote Hans Langsdorff on December 19, 1939, in a hotel room in Buenos Aires. Langsdorff finished his letter to the Nazi ambassador to Argentina, lay down on a German battle flag, and shot himself.

Langsdorff had been the commander of the Admiral Graf Spee, which had been prowling the South Atlantic the week before, and now was resting on the bottom of the harbor at Montevideo, Uruguay. Many a captain has chosen to atone for the loss of his ship by going down with it. Langsdorff had suicide with a pistol two days after he had ordered his ship to be scuttled.

"I can now only prove by my death that the fighting services of the Third Reich are ready to die for the honor of the flag," he wrote.

But what had led Langsdorff to kill himself? Why meet death in a hotel room instead of at sea? Therein lays one of the most remarkable sea battles of all time: how the Royal Navy bluffed a German battleship into sinking itself.

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Russia's Navy is falling behind the U.S. Navy in combat power, according to Russian defense press.

The Russian Navy's combat capability was just 45 percent of the U.S. Navy's according to an analysis by flot.com, a Russian defense Web site [English translation here]. This is down from 47 percent in 2017 and 52 percent in 2014.

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