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
Uniform of the Union Army as follows: Contemporary photographs and a Winslow Homer painting, "Playing Old Soldier", show staff officers occasionally added their departmental initials within the shoulder straps between the rank insignia. "M.S." for "Medical Staff" appears to have been the most common. With the exception of slight changes to the representing insignia for the more junior commissioned grades as well as additional color combinations for new career fields, the shoulder strap insignia and color scheme survives largely unchanged in the modern era on the Army Service Uniform. Individual officers would sometimes add gold braid Austrian knots on their sleeves but this practice was