Vintage US Army Captain O‑3 Rank Patch Pair Subdued Black on OD Green Sew‑On

Pair of subdued U.S. Army Captain (O‑3) rank insignia patches featuring the classic black embroidered railroad tracks on olive drab green twill. Each patch is constructed on folded twill, the reinforced folded‑over style used on vintage field‑uniform insignia. Commonly worn from the late Vietnam era through the Woodland BDU period on combat uniforms and patrol caps. Designed for sew‑on application. Listing includes both patches. Sourced from an Army Navy Surplus Store and sold as novelty collectible uniform items, not official issue.

FEATURES
- Rank: Captain (O‑3)
- Style: Subdued field insignia
- Colorway: Black on OD green
- Construction: Folded twill
- Era: Vietnam → BDU period
- Attachment: Sew‑on
- Material: OD green twill
- Quantity: Pair (2 patches)
- Source: Army Navy Surplus Store