General George Washington founded the U.S. Army JAG Corps on 29 July 1775, with the appointment of William Tudor as the Judge Advocate General. The Army Judge Advocate General's Corps is the oldest of the judge advocate communities in the U.S. armed forces – as well as the oldest law firm in the United States. The Judge Advocate General, who is referred to as TJAG (pronounced "tea-jag"), serves a term of four years. Lieutenant General Flora D. Darpino, appointed on 4 September 2013, is the thirty-ninth Judge Advocate General and the first female to serve in that position. The appointment of then-Major General Scott C. Black, to the grade of lieutenant general on 11 December 2008 brought the billet into parity with the Army's Surgeon General and Chief of Engineers.
https://en.wikipedia.org/wiki/Judge_Advocate_General%27s_Corps,_United_States_Army