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It was beautiful to hear the lad lay out the science of war , and wallow in details of battle and siege , of supply , transportation , mining and countermining , grand tactics , big strategy and little strategy , signal service , infantry , cavalry , artillery , and all about siege guns , field guns , gatling guns , rifled guns , smooth bores , musket practice , revolver practice - - and not a solitary word of it all could these catfish make head or tail of , you understand - - and it was handsome to see him chalk off mathematical nightmares on the blackboard that would stump the angels themselves , and do it like nothing , too - - all about eclipses , and comets , and solstices , and constellations , and mean time , and sidereal time , and dinner time , and bedtime , and every other imaginable thing above the clouds or under them that you could harry or bullyrag an enemy with and make him wish he had n't come - - and when the boy made his military salute and stood aside at last , I was proud enough to hug him , and all those other people were so dazed they looked partly petrified , partly drunk , and wholly caught out and snowed under . Lucent has eight regional offices , two Bell Labs branches , four research and development facilities and a number of joint ventures and wholly owned enterprises in China .