Question: What Civil War regiment adopted a motto that later became the official motto of the United States?

Context articles: In God We Trust
List of Oregon state symbols
Guardians of the Dawn
125th Pennsylvania Infantry
22nd Arkansas Infantry Regiment
Semper Gumby
E pluribus unum
65th Infantry Regiment (United States)
Semper paratus
39th Arkansas Infantry Regiment

"In God We Trust" is the official motto of the United States.
 It was adopted as the nation's motto in 1956 as an alternative or replacement to the unofficial motto of "E pluribus unum", which was adopted when the Great Seal of the United States was created and adopted in 1782.
The U.S. state of Oregon has 27 official emblems, as designated by the Oregon State Legislature.
 Most of the symbols are listed in Title 19, Chapter 186 of the Oregon Revised Statutes (2011 edition).
 Oregon's first symbol was the motto "Alis Volat Propriis", written and translated in 1854.
 Latin for "She Flies With Her Own Wings", the motto remained unchanged until 1957, when "The Union" became the official state motto.
 "Alis Volat Propriis" became the state motto once again in 1987.
 Originally designed in 1857, usage of the Oregon State Seal began after Oregon became the 33rd state of the United States on February 14, 1859.
 The motto and seal served as Oregon's only symbols until over 50 years later, when the Oregon-grape became the state flower in 1899.
 Oregon had six official symbols by 1950 and 22 symbols by 2000.
 The newest symbol of Oregon is brewer's yeast, declared the state microbe in 2013.
The Guardians of the Dawn (Arabic: حراس الفجر "Ḥurrās al-Fajr") are a coalition of Christian pro-government militias which are involved in the Syrian Civil War and affiliated with the Air Force Intelligence Directorate.
 Although the Guardians of the Dawn, whose official motto is ""A homeland that we do not protect is one we do not deserve to live in"", promote themselves as a Syrian nationalist force, their fighters are primarily motivated by a concept of holy war to defend the Christian areas of Syria from hostile rebels.
 The militiamen of Usud al-Cherubim, one of the coalition's constituent groups, even refer to themselves as "mujahideen of the cross".
The 125th Pennsylvania Infantry volunteered during the American Civil War and served a 9-month term from August 1862 to May 1863.
 It selected the motto In God We Trust.
 The Regiment fought at the Battle of Antietam under the leadership of Colonel Jacob C. Higgins less than six weeks after being recruited in Blair, Cambria and Huntingdon Counties.
 The Regiment was noted for its charge through the East Woods, along the Great Cornfield, down Smoketown Road, past the Dunker Church, and into the West Woods.
 While in formation beyond the Dunker Church in an 'overextended' position, the Regiment repulsed four counterattacks at a price of 229 casualties (33% of engaged) within 20 minutes.
 A fifth, heavily reinforced Confederate counterattack forced a retreat with a desperate struggle to retain the Regimental colors.
 Two weeks before the end of their enlistment, the 125th Pennsylvania also occupied the perimeter of Chancellorsville, Virginia, during the Battle of Chancellorsville.
The 22nd Arkansas Infantry Regiment was a Confederate Army infantry regiment during the American Civil War (1862–1865).
 This regiment was originally organized as the 17th Arkansas Infantry Regiment, reorganized after the battle of Pea Ridge as 1st Regiment, Northwest Division, Trans-Mississippi Department, or Rector's War Regiment, redisgnated as the 35th Arkansas in the summer of 1862, and reorganized and redesignated as the 22nd Arkansas following the Battle of Prairie Grove.
 The unit was also sometimes referred to as, King's Arkansas Infantry or McCord's Arkansas Infantry.
 This was the second regiment to be officially designated as the 22nd Arkansas.
 The first was mustered in at DeValls Bluff, Arkansas, on April 9, 1862, and later reorganized as the 20th Arkansas Infantry Regiment.
Semper Gumby is an unofficial motto for the United States Marine Corps, United States Coast Guard, United States Public Health Service Commissioned Corps, Navy submariners, Navy Seabees, Army Unit Supply Specialists, and the Civil Air Patrol.
 It is a play on the official motto "Semper Fidelis", usually abbreviated "Semper Fi", which means ""Always Faithful"", and that of the US Coast Guard, "Semper Paratus", meaning ""Always Ready.""
 "Semper Gumby", referring to the animated clay character Gumby, means ""Always Flexible"".
 The real Latin phrase meaning ""always flexible"" is "semper flexibilis".
E pluribus unum ( ; ] )—Latin for "Out of many, one" (alternatively translated as "One out of many" or "One from many") — is a 13-letter traditional motto of the United States of America and of the city of Monguagá in Brazil, appearing on the Great Seal along with "Annuit cœptis" (Latin for "She/He/It approves the undertaking [lit.
 'things undertaken']") and "Novus ordo seclorum" (Latin for "New order of the ages"), and adopted by an Act of Congress in 1782.
 Never codified by law, "E Pluribus Unum" was considered a "de facto" motto of the United States until 1956 when the United States Congress passed an act (H. J. Resolution 396), adopting "In God We Trust" as the official motto.
The 65th Infantry Regiment, nicknamed "The Borinqueneers" from the original Taíno name of the island (Borinquen), is a Puerto Rican regiment of the United States Army.
 The regiment's motto is "Honor et Fidelitas", Latin for "Honor and Fidelity".
 The Army Appropriation Bill created by an act of Congress on 2 March 1898, authorized the creation of the first body of native troops in Puerto Rico.
 On 30 June 1901, the "Porto Rico Provisional Regiment of Infantry" was organized.
 On July 1, 1908, Congress incorporated the regiment into the Regular Army as the Puerto Rico Regiment of Infantry, United States Army.
 On May 14, 1917, the Regiment was activated and additional men were assigned, with the unit being sent to serve at Panama.
 On June 4, 1920, the Regiment was renamed 65th Infantry.
 During World War II, the Regiment saw action throughout Europe, especially France and Germany, participating in Naples-Foggia, Rome-Arno and Rhin.
 Several Purple Hearts were handed posthumously to members of the 65th Regiment, and the Medal of Honor was granted to Capt. Eurípides Rubio, Héctor Santiago, Carlos Lozada and Fernando García.
Semper Paratus is a Latin phrase, meaning "Always ready".
 It is used as the official motto of some organizations, such as the United States Coast Guard.
 A 1928 song of the same name is also used as the U.S. Coast Guard's official march, and appears on the organization's flag.
The 39th Arkansas Infantry Regiment or Cocke's Arkansas Infantry Regiment (also known as "Johnson's regiment," "Hawthorn's regiment," "Cocke's regiment," and "Polk's regiment") was an infantry formation in the Confederate States Army during the Civil War, and was successively commanded by Colonels A. W. Johnson, A. T. Hawthorn, J. B. Cocke, and Lieutenant-Colonel C. Polk.
 It was mustered into service on June 17, 1862, at Trenton, Arkansas, remaining active through May 26, 1865.
 When Major-General Sterling Price's staff decided to designate all infantry regiments in the District of Arkansas as "Trans-Mississippi rifle regiments", the 39th Arkansas Infantry Regiment was designated as the 6th Trans-Mississippi Rifle Regiment.
 One other Arkansas regiment was designated as the 39th Arkansas Infantry; that regiment being successively commanded by Colonels Hart, McNeill, and Rogan.
 It was originally designated as the 39th Arkansas, but later redesignated as the 30th Arkansas Infantry Regiment.
 The 39th served in the Trans-Mississippi Theater of the American Civil War and participated in all of the principal engagements in that department before disbanding on May 26, 1865.