Argentine Army officer rank insignia the Joint General Staff, if he should be an Army officer. There are mentions of the rank of "" (Captain General), but it is a purely honorific rank bestowed posthumously upon José de San Martín. The rank of Senior Colonel is an honorary rank for long-serving colonels who have not been promoted to Brigade General; the rank is considered inferior to Brigade General but superior to Colonel. Senior Colonels may be further promoted to general ranks. The following table displays the rank insignia worn by officers of the Argentine Army. Argentine Army officer rank insignia Argentine Army officers wear their
United States Army officer rank insignia or shoulder strap identified him as a commissioned officer. For majors, the shoulder strap contained an oak leaf, but like the second lieutenant, the epaulette had no grade insignia. However, the major was still distinguishable from the second lieutenant due to the more elaborate epaulette fringes worn by field grade officers. In 1872, epaulettes were abolished for officers and replaced by shoulder knots. As the shoulder knots had no fringe, it was necessary that some change in the insignia on the dress uniform be made in order to distinguish the major from the second lieutenant. It was natural to use