Igor Markov's answer to Why does the US government spend so much on military? Jon Davis' answer to Given that China is fine without blue-water navy, why does the US need one? Being even is the Deadliest form of Warfare
Imho the most influential war in history is the Caesar Augustus' failing attempt to conquer the Germans. He sent two legions over the Limes Renano expecting to tame the german population. It didn't happened: in the Battle of Teutoburg Forest the army of 15.000 well trained roman solders was completely slayed but Germans. In a what if...
this was one of the most significant naval battles during the civil war primarily because of the new kinds of warships used it was fought on march 8 9 1862 near hampton roads virginia the monitor and merrimac were the first iron clad warshipsattle of antietam this was the first major battle fought in the north it was fought near sharpsburg maryland on september 17 1862 the battle of antietam is known as the bloodiest battle of the american civil war