G.A.R.youdaoicibaDictYouDict[G.A.R. 词源字典]
1867, abbreviation of Grand Army of the Republic, the organization founded by union veterans of the American Civil War. The Grand Army was the name given (on the French model) to the army that organized in Washington in 1861 to put down the rebellion.[G.A.R. etymology, G.A.R. origin, 英语词源]