Distinctive Unit Insignia. Description: A gold color metal and enamel device 1 3/32 inches (2.78cm) in height overall, consisting of a shield blazoned: Or, on a fess abased Gules (Crimson) over a pale of the like a spanner fesswise of the first. Attached below the shield a Gold scroll inscribed "QUITAR FIJAR Y REPONER" (Remove Repair Replace) in Red letters.

    Symbolism: Crimson and yellow are the colors traditionally associated with the Ordnance Corps and reflect the unit's former designation as an Ordnance Battalion. The intersecting bands represent a walk, Alameda (the Battalion's home area) meaning public walk in Spanish. The spanner is for Ordnance and in its early form was a tool used in adjusting a wheel-lock musket.

    Background: The distinctive unit insignia was originally authorized for the 749th Ordnance Battalion, California National Guard on 14 Aug 1957. It was redesignated for the 749th Maintenance Battalion on 26 Jun 1986. On 23 Mar 1973, the insignia was redesignated for the 749th Support Battalion. The distinctive unit insignia was redesignated for the 749th Maintenance Battalion on 30 Sept 1980, with description and symbolism revised.

        Shield: Or, on a shield fess abased Gules (Crimson) over a pale of the like a spanner fesswise of the first.

        Crest: That for the regiments and separate battalions of the California National Guard: From a wreath of the colors Or and Gules (Crimson), the setting sun behind a grizzly bear passant on a grassy field all Proper.

        Motto: QUITAR FIJAR Y REPONER, (Remove, Repair, Replace)

    Symbolism:

        Shield: Crimson and yellow are the colors of the Ordnance Corps, the former designation of the unit. The intersecting bands refer to Alameda, the Spanish word for public walk, and denote the battalion's home area. The spanner, a tool used for adjusting a wheel-lock musket, represents Ordnance.

        Crest: The crest is that of the California Army National Guard.

    Background: The coat of arms was originally approved for the 749th Ordnance Battalion, California Army National Guard on 14 Aug 1957. It was cancelled on 26 Jun 1968. On 10 Jan 1997, the coat of arms was reinstated and redesignated for the 749th Maintenance Battalion, California Army National Guard.