Of the Montgomery Guards, he is not listed and their records only come from one muster roll in 1863, and appears to be composed of exempts enrolled for Local Defense, Montgomery.
I would not believe that there is an error in transcribing his given name, especially since attorney, B. Fitzpatrick filed claim for both brothers.
Browden, Joel (Browder) G 1st Ala. 5-30-1862 - 120
Browden, Joshua (Browder) G 1st Ala. 5-7-1862 - 47
http://www.geocities.com/ad4os/WI_DIV_SCV/Confederate_Rest/index.html
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James R. Browder
Enlisted as a Private
AL Montgomery Light Artillery
Sources used by Historical Data Systems, Inc.:
- Index to Compiled Confederate Military Service Records
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James R. Browder, Private, Captain Andrews' Company, Alabama Light Artillery,* enlisted September 10, 1862 at Montgomery by W. G. Andrews for 12 months, joined from Camp of Instruction at Notasulga, Ala., died at Richmond, Va., n.d., claim for the settlement of his accounts were filed by Attorney B[ird?]. Fitzpatrick February 7, 1863
* This company subsequently became Lee's Battery, Alabama Light Artillery
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Joshua Browder, Private, (Old) Company C, 1st Regiment Alabama Infantry, enlisted May 20, 1861 at Barrancas by Col. Clayton for Unx. Term, detailed as Nurse in General Hospital August 8, returned to company September 22, enlistment extended for 2 years or the war, due bounty of $50 January 14, 1862, recorded in January as on furlough to his residence, captured at Island No. 10, April 1862, received at Camp Randall, Madison, Wisconsin prison camp April 20, died May 6, 1862, claim for the settlement of his accounts were filed by Attorney B[ird?]. Fitzpatrick December 1, 1862
* This regiment was called into service of the State by the Governor of Alabama, January __, 1861, for 12 months as 1st Regiment Alabama Infantry; re-organized March 5, 1862, at Fort Barrancas, Fla., as 1st Regiment Alabama Artillery, and again re-organized April __, 1862 at Memphis, Tenn., as 1st Regiment Alabama Infantry. This company subsequently became (New) Company G, 1st Regiment Alabama Infantry
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Joel Browder, Private, Company G, 1st Regiment Alabama Infantry, captured at Island No. 10, April 7, 1862,
received at Camp Randall, Madison, Wisconsin April 20, died May 9, 1862, claim for the settlement of his accounts were filed by Attorney B[ird?]. Fitzpatrick December 1, 1862
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Montgomery Guards - Local Defense
Only one muster roll, that dated December 25, 1863, at Montgomery, Ala.
D. Browder, Private, Montgomery Guards, age 48, listed as Exempt on muster roll dated December 25, 1863
John Browder, Private, Montgomery Guards, age 30, listed as Exempt on muster roll dated December 25, 1863
M311: Compiled Service Records of Confederate Soldiers Who Served in Organizations from the State of Alabama