The rank of major and lieutenant colonel were designated by oak leaves.

The structure of United States military ranks had its roots in British military traditions, adopting the same or similar ranks and titles. The "E" (enlisted scale), "W" (warrant officer scale), and "O" (officer scale) grade prefixes were not used until introduced by the The rating (not rank) of specialist had the command responsibilities of either a private first class or private, but conveyed slightly higher pay depending on the specialty and skill. In actuality, the precedence of silver outranking gold was a consequence of the decision in 1851 to select silver over gold as a matter of economy.While not currently in use today, special insignia were authorized by Congress created the rank of general of the armies specifically for Washington, although while living he never officially accepted the honor. The structure of United States military ranks had its roots in British military traditions, adopting the same or similar ranks and titles. Aides-de-camps (mostly with the rank of captain) to officers of general grades wore a green sash.General Staff, artillery, engineer and field officers wore bullion fringed epaulets: Generals with silver eagle insignia and one or two five-pointed stars, depending on rank. This additional pay, in addition to the number of specialists of the sixth and seventh grades in relation to the total number of enlisted men of these grades, was defined in the National Defense Act of 1920. The rank of Private Specialist, usually just called a Specialist, had the command responsibilities and official insignia of a Private First Class, but also conveyed higher pay depending on the specialty and skill. Pershing received the rank in 1919 and was allowed to choose his own insignia; he chose to use four gold stars. In 1872 the ranks of First Lieutenant and Captain reverted back to silver insignia. Senior officers, Lieutenant Colonel, Colonel, and General wore silver insignia. U.S. Army Officer Ranks World War II. Army: * For rank and precedence within the Army, specialist ranks immediately below corporal. While a conjectural design for the rank of general of the armies was proposed using six silver stars when the promotion of While no living officer holds either of these ranks today, the General of the Army title and five-star insignia designed in 1944 are still authorized for use in wartime. Rank Created: 7 Nov 1942 Rank Abolished: 1945. It was natural to use the gold leaf which the major had been wearing on the shoulder strap. One anecdotal explanation suggested by some NCOs is that the more-malleable gold suggests that the bearer is being "molded" for his or her responsibilities—as a junior company grade officer (while a second lieutenant) or a junior field grade officer (while a major). In the same year, the bars on the shoulder straps of the captains and first lieutenants were changed from gold to silver.In 1944, officers and enlisted personnel in leadership positions started wearing Leader Identification badges - narrow green bands under their rank insignia; this was initially approved as a temporary measure for In terms of heraldic tradition, these changes created the curious situation of silver outranking gold. Warrant Officers. Field officers wore four flaps and buttons, captains wore three, lieutenants wore two.In 1836, shoulder straps were adopted to replace the epaulette for field duty. On 8 January 1942, under War Department Circular No. Warrant Officer . Brigadier generals wore a purple sash, major generals a pink sash, and George Washington as commander in chief, wore a light blue sash. A lieutenant colonel was determined by the color of the border, so an Infantry Lt. Col. wore silver oak leaves, and other branches wore gold oak leaves. 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. The silver eagle was selected based on the fact that there were more colonels with the silver eagle that those with gold, primarily in the cavalry and artillery, hence it was cheaper to replace the numerically fewer gold ones in the infantry.

Captains a single epaulet on the right shoulder, lieutenants on the left shoulder.In 1832, epaulettes were specified for all officers (see above).

Another rationale, perhaps originally devised as a tool for recruits to sort out the confusion, proposed that the symbolism was expressed as proximity to the heavens. While the official insignia was a single chevron, it was not uncommon for local commanders to authorize local use of specialist insignia which consisted of one chevron and one to six rockers depending on the pay grade of the specialist (one rocker in the 6th grade, six rockers in the 1st grade). In addition, there was on the cuffs a slashflap with several horizontal rows of lace with a button on the outer ends. The lace was of yellow colour (infantry, white).

The insignia was changed to add a third rocker to match the other 1st grade rank, master sergeant.As seen in the comparative chart below, the U.S. Army ranks during World War II were not abbreviated the same as they currently are today having all letters Some ranks are not included in the chart for a proper comparison.

Congress may promote generals to this rank for successful wartime campaigns, or to give the officer parity in rank to foreign counterparts in joint coalitions, specifically with respect to 1832–1851: epaulettes and slashflaps vs. shoulder straps (1836)1832–1851: epaulettes and slashflaps vs. shoulder straps (1836)Title "General of the Army" is an honorary or posthumous rank, a war-time rank, or ceremonial rank.Spencer Tucker, Almanac of American Military History, Vol.I (1000-1830), Santa Barbara (Calif.) etc.