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US Marine Corps Utility Cap. "B1" USMC Utility Cap V2. Signature (KIRWAN) Painting
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About This Work
US Marine Corps Utility Cap Luzon WW2.
The images is the USMC Herringbone Twill (HBT) Utility Cap, a definitive piece of Marine Corps gear from WW2. The history, variants, and characteristics of this iconic cap during WW2 include the following details:
1. Evolution and Origin
- Army Influence (1941–1942): Early in the war, Marines often utilized the U.S. Army M1941 mechanics cap (a rounded, short-brimmed cap) or the floppy "Daisy Mae" full-brimmed denim/HBT hats.
- The "Raider Cap": As the Marine Corps began optimizing gear for the harsh, hot environments of the Pacific Theater, they developed a paneled design inspired by traditional railroad engineer hats. It quickly earned the nickname "Raider Cap" due to its widespread popularity among the elite Marine Raider battalions.
2. Key Design Variations
During the war, the design shifted toward a simpler, flatter silhouette to accommodate the application of the EGA insignia:
- Early P41 Pattern: Adapted closely from the early Army pattern, these caps initially included a vertical centerline seam down the front of the crown and omitted side cooling vents.
- Revised M1944 / P44 Pattern: Standardized later in the war (around July 1944), this version moved the panel seams to the sides. This adjustment left a flat front panel specifically to make it easier to iron on or stencil the Marine Corps insignia. This version featured a slightly shorter visor/bill and a shorter, tighter profile.
3. Material and Visual Identifiers
- Fabric: Built from a rugged, 9-ounce cotton Herringbone Twill (HBT). The fabric featured a distinct diagonal, zig-zag weave that resisted tearing in dense jungle environments.
- Color: Officially designated in shades of olive, these caps are highly recognizable by their lighter, distinct "sage green" or "seafoam green" tint. Over months of hard field use, sun exposure, and heavy laundering, the fabric faded dramatically, a look seasoned Marines proudly referred to as a "salty" patina.
- Insignia: The cap featured the Eagle, Globe, and Anchor (EGA) emblem. While standard regulations transitioned to a black ink heat-transfer or stencil on the front crown, many Marines in theater pinned their metal Model 1937 bronze collar/service insignia directly onto the cap, exactly as depicted in your oil painting.
4. Legacy: The Birth of the 8-Point Cover
While the WW2 utility caps were softer, tighter, and more rounded than today's uniforms, their paneled construction laid the direct foundation for the rigid, geometric 8-pointed utility cover that remains a fierce symbol of Marine Corps identity and pride.
When discussing a "B1" USMC Utility Cap from WW2, you are looking at a highly unique, theater-specific hybrid piece of military headgear.
While the standard-issue Marine Corps fatigue cap was the P41 or P44 Herringbone Twill (HBT) utility cap, the Type B-1 designation officially belonged to the U.S. Army Air Forces (USAAF) Summer Flying Cap.
1. The Origin: Type B-1 Summer Flying Cap
Standardized in 1939 by the military, the official Type B-1 Cap was a lightweight, four-panel, baseball-style cap with a prominent elongated visor (often called a "duckbill" or "longbill").
- Design Purpose: It lacked a top button so it could fit comfortably underneath aviation headsets and leather flight helmets.
- Original Material: The standard factory-issue USAAF B-1 caps were made out of lightweight olive drab (OD) cotton twill or gabardine fabric.
2. The USMC "Rigger-Made" B-1 Variant
During the island-hopping campaigns of the Pacific Theater, Marines frequently modified, traded, or custom-built gear to survive the brutal heat. This gave rise to the rare USMC Rigger-Made HBT Type B-1 Cap.
- The Construction: Marine Corps parachutists and supply personnel ("riggers") utilized their heavy-duty sewing equipment to replicate the popular long-billed USAAF B-1 pattern.
- The Material Shift: Instead of the lightweight army fabric, they used salvaged 9-ounce Marine Corps Sage Green Herringbone Twill (HBT) fabric.
- Why Marines Loved It: The extended duckbill visor offered vastly superior sun and glare protection on glaring Pacific beaches compared to the short-brimmed standard P41 utility cap. It was an immediate status symbol among Marine aviators, ground crews, and elite raider units
Artwork Details:
- Medium: Acrylic on canvas panel
- Size: 18"W x 14"H
- Gallery-wrapped canvas
- Original artwork by Laurence Kirwan