The first time your Marine came home talking about "the Crucible" or signed a text with "Semper Fi," you might have smiled and nodded—and quietly wondered what it actually meant. That's normal. The Marine Corps has its own language, its own symbols, and its own traditions, and most of us learn them the same way: one conversation, one care package, one graduation at a time. This guide breaks it all down, so the next time someone says "Oorah," you'll know exactly what they mean—and maybe even say it back.
Quick answer: The most recognized Marine Corps symbol is the Eagle, Globe, and Anchor (EGA) — representing the nation, worldwide service, and naval heritage. Common terms every Marine mom will hear include "Semper Fi" (always faithful), "Oorah" (an expression of enthusiasm), and "Devil Dog" (a nickname for Marines dating back to World War I). Below is the full guide.
Symbols Marine Moms Wear & Display
The Eagle, Globe, and Anchor (EGA)
The EGA is the official emblem of the United States Marine Corps, and it's the single most recognized symbol in Marine culture—you'll see it on rings, belt buckles, tattoos, and yes, a lot of jewelry Marine moms wear too. Each element carries its own meaning:
- The Eagle represents the nation the Marine Corps serves and protects.
- The Globe represents the Marine Corps' worldwide presence and commitment.
- The Anchor represents the Corps' naval heritage and its close ties to the Navy.
Together, they've represented the Corps since 1868—and for a lot of Marine moms, wearing a small EGA pendant becomes a quiet, everyday way of staying connected to what their Marine carries with them.
"Semper Fi" Lettering
You'll often see "Semper Fi"—short for Semper Fidelis, Latin for "always faithful"—displayed on its own, separate from the EGA. It's the Marine Corps motto, adopted in 1883, and it's less about a single moment of loyalty and more about a standing promise to the Corps, to the country, and to each other. Many Marine moms adopt the phrase for themselves too—not because they raised a hand and swore an oath, but because faithfulness runs both directions in a Marine family.
Red and Gold
The Marine Corps' red and gold (officially scarlet and gold) show up everywhere in Marine culture—from the dress blues uniform's trim to unit flags. If you've ever wondered why so much Marine mom apparel leans into this exact color combination instead of generic red-white-and-blue, that's why: it's a direct, recognizable nod to the Corps' official colors.
"Once a Marine, Always a Marine"
This isn't an official motto, but it might as well be—it's one of the most repeated phrases in Marine culture, and it reflects something Marine families learn quickly: this doesn't end at EAS (End of Active Service). The identity sticks. You'll hear veterans say it decades after their last day in uniform, and it's often what Marine moms mean when they say they're "still" a Marine mom, long after their Marine has come home for good.
Terminology Glossary: What Marine Moms Should Know
| Term | What It Means |
|---|---|
| Semper Fi | Short for Semper Fidelis, "always faithful"—the Marine Corps motto. |
| Oorah! | An expression of enthusiasm, agreement, or motivation, used constantly in Marine culture. Its exact origin is debated, but it's commonly traced to a submarine dive-alarm sound adopted by Force Recon Marines in the 1950s. |
| Devil Dog | A nickname for Marines, said to date back to World War I's Battle of Belleau Wood, when German soldiers reportedly called Marines "Teufel Hunden" for their ferocity in combat. |
| Leatherneck | An older nickname for Marines, referring to the leather neck stock once worn as part of the Marine Corps uniform. |
| Boot / Boot Camp | "Boot" refers to a brand-new Marine, fresh out of training. "Boot Camp" is the 13-week recruit training itself. |
| The Crucible | A grueling 54-hour final training event near the end of boot camp is widely considered the moment recruits earn the title "Marine." |
| Moto Mail | Short for "motivational mail" — letters recruits receive during boot camp meant to encourage rather than worry them (see our Boot Camp Graduation & Family Day guide for what to write). |
| Dress Blues | The formal Marine Corps uniform, worn at ceremonies like graduation, is recognizable by its dark blue coat, red trim, and white cover. |
| Poolee | Someone who has enlisted but hasn't yet left for boot camp — if your future Marine is in this stage, you're technically already a Marine mom-in-waiting. |
| Jarhead | A widely used nickname for Marines, sometimes used affectionately and sometimes self-deprecatingly by Marines themselves. |
Sayings Marine Moms Adopt as Their Own
A lot of Marine moms don't just learn this language—they start living by parts of it. "Semper Fi" becomes less about the Corps and more about how you show up for your Marine, no matter the distance or the deployment. It's not uncommon to hear a Marine mom sign a card "Semper Fi, Mom"—a small phrase that says, "I'm still in this with you."
If you've felt that shift yourself, you're not alone—it's one of the most common threads running through our collection of Marine Mom quotes, many of which borrow directly from this same language—and it's the same thread that connects the wider Marine Mom community too.
Using These Symbols the Right Way
A quick but important note: the Eagle, Globe, and Anchor are an official, trademark-protected emblem of the United States Marine Corps—not just a decorative design. When you're choosing jewelry, apparel, or decals featuring the EGA, it's worth choosing pieces that treat the symbol with the respect it's due, rather than as a generic "military-style" graphic. It's a small distinction, but it matters to a lot of Marine families—and it's something we take seriously in every design we create.
Our Marine Mom shirts are designed with exactly this in mind — pieces meant to honor what the symbol represents, made for the moms who understand what it means to wear it.
Frequently Asked Questions
What does EGA stand for in the Marine Corps? EGA stands for Eagle, Globe, and Anchor—the official emblem of the United States Marine Corps, representing the nation, worldwide service, and naval heritage.
What does "Oorah" mean? "Oorah" is a Marine Corps expression of enthusiasm, agreement, or motivation—similar in spirit to the Army's "Hooah," though Marines will be quick to tell you it's not the same thing.
Why do Marines say "Semper Fi"? Semper Fi" is short for Semper Fidelis, Latin for "always "faithful"—the official Marine Corps motto since 1883, representing loyalty to the Corps, country, and fellow Marines.
What is a "Devil Dog"? "Devil Dog" is a nickname for Marines that dates back to World War I, when German soldiers are said to have called Marines "Teufel Hunden" because of their fierce fighting spirit at the Battle of Belleau Wood.
Is "Once a Marine, Always a Marine" official? It's not an official Marine Corps motto, but it's one of the most widely repeated phrases in Marine culture, reflecting how deeply the Marine identity sticks long after active duty ends.