The Armchair Historian on MSN

Evolution of German Tanks: From WWI to Modern Warfare

From the clunky machines of World War I to the feared armor of World War II and beyond, the evolution of German tanks ...

How GE Aerospace Engines Stack Up Against Pratt & Whitney Engines

The P&W XA103 variable cycle engine (VCE) is currently competing with GE’s XA102 as the race heats up to build the world’s first turbine engine that can change stage speeds on the fly to flip between ...