0306 vs 0313
Infantry Weapons Officer (USMC) vs Light Armored Vehicle Crewman (USMC)
Same haircut, same intensity, same institutional pride — completely different answers when a civilian asks "so what do you actually do?"
AAR: 0306 vs 0313. Sustain (0306): some Gunners are integrated into planning from the start; others spend their time at the range running qualification courses because that's what the command defaults to. Sustain (0313): you are technically in the 03 infantry field, but you are not a grunt — you crew a vehicle. Improve (both): the part where the career counselor explains any of this before you sign. One military. Two completely different answers to "what do you do?" at a party.
After the Uniform
The part the recruiter skips: what each job actually translates to once you're a civilian — and what it pays.
Salary data from the U.S. Bureau of Labor Statistics Occupational Employment and Wage Statistics program. A guide, not a guarantee.
Recruiter vs. Reality
The pitch versus what people who actually did the job report back.
“The Marine Gunner is the battalion's walking weapons encyclopedia — the Chief Warrant Officer who knows every infantry weapons system in the inventory cold. Machine guns, mortars, rockets, anti-armor, breaching equipment: the Gunner advises the battalion commander on how to employ all of it with maximum effect. This is not a command billet — it's a technical authority billet. When the battalion needs to know whether to use a SMAW or an AT4, what mortar registration looks like in an urban canyon, or how to set up an FPL, the Gunner is who they ask. If you have years of infantry experience and want to spend your warrant officer career being the unit's deepest tactical expert, this is the path.”
The Gunner is respected but can also be underutilized — your value depends entirely on whether the battalion commander and S3 know how to use you. Some Gunners are integrated into planning from the start; others spend their time at the range running qualification courses because that's what the command defaults to. You are an advisor, not a commander — influence without authority can be frustrating when you see tactical decisions made poorly. The warrant officer track in the Marines is narrower than the Army's; promotion opportunities and follow-on billet options are limited. On the upside: if you find a good battalion, the Gunner billet is one of the most intellectually satisfying in the infantry — you get to be the person who actually knows how all the weapons work and why.
“You'll crew one of the fastest armored vehicles in the Marine Corps — the LAV-25, an eight-wheeled reconnaissance vehicle with a 25mm chain gun. LAV units are the Marine Division's eyes and ears, conducting reconnaissance and security missions ahead of the main force. You'll learn vehicle gunnery, mounted tactics, and how to fight from a platform that gives you firepower and speed that dismounted infantry doesn't have. It's an infantry MOS with a vehicle, which means you get the best of both worlds — combat arms credibility and a technical skill set.”
This MOS lives in an identity crisis and the Marines in it will tell you about it. You are technically in the 03 infantry field, but you are not a grunt — you crew a vehicle. You don't do the things that define infantry life (long patrols, living in the dirt for weeks, the traditional infantry brotherhood), but you also don't get the respect or resources that dedicated vehicle communities like tanks used to get. You are somewhere in between, and neither side fully claims you. The LAV-25 itself is a Cold War-era platform that has been upgraded but is fundamentally aging. Your 25mm Bushmaster chain gun is effective but the vehicle's armor will not stop anything serious — it's light armored, emphasis on light. You are fast and you are mobile, which is the point — LAV units screen, recon, and provide security. You are not meant to slug it out with heavy armor. Training at Camp Pendleton covers vehicle operation and gunnery basics, but like most MOSs the real learning is in the fleet. The morale issue is real: LAV battalions are small, school seats for career-enhancing courses often go to the grunt battalions first, and the promotion path can feel stagnant compared to 0311s who have more billets and more visibility. The Force Design 2030 restructure is also hanging over this community — the Marine Corps divested tanks entirely and the future of LAV units is an open question as the Corps moves toward lighter, more dispersed formations. Civilian translation is thin — there is no civilian LAV. The discipline, teamwork, and mechanical aptitude transfer, but you'll need to build a resume beyond "I crewed an armored vehicle" to compete in the job market. Use TA while you're in.
The Real Life
Same dimensions, side by side. 0306 on the left, 0313 on the right.
Advising commanders on weapons employment, running ranges, managing arms rooms, overseeing marksmanship programs, and serving as the resident expert on everything from M4s to TOW missiles. You are the battalion or regiment's weapons guru and maintenance authority. Administrative duties include armory management and accountability.
Gunnery drills, mounted reconnaissance, vehicle maintenance, and field training. LAR Marines spend significant time in the motor pool maintaining LAV-25s — these vehicles are old and require constant attention. Field time is heavy. When garrison, expect PT, ranges, maintenance, and training packages.
Warrant Officer Basic Course at Quantico, followed by specialized weapons training. The pathway to WO in the infantry community requires extensive enlisted experience — most 0306s were senior SNCOs before selection. The WO culture is distinct: you are a technical expert, not a commander.
After SOI (School of Infantry), you attend the LAV Crewman Course at Camp Pendleton. Training covers LAV-25 operations, gunnery, reconnaissance fundamentals, and vehicle maintenance. The course is hands-on and physically demanding. Expect a lot of time in the turret and in the field.
High. You are expected to maintain infantry-level fitness while serving as the technical expert on all infantry weapons systems. Field time is substantial.
Very high. You combine infantry fitness requirements with the demands of operating the LAV-25. Mounted and dismounted operations, turret drills, and reconnaissance patrols in all terrain and weather. Expect to be crammed into a hot vehicle for hours, then dismount and patrol on foot.
The 0306 Infantry Weapons Officer is one of the most respected warrant officer billets in the Marine Corps. You are the subject matter expert that battalion commanders rely on for everything weapons-related. The path to get here is long — years of enlisted infantry experience — but the payoff is a stable career doing what you love without the command burden of commissioned officers. The recruiter doesn't recruit for this MOS; it finds you. Civilian translation is strong in the firearms industry, defense contracting, and law enforcement training. The downside: warrant officer promotions are slow, and the billet structure limits where you can be assigned.
LAR Marines occupy a unique niche between infantry and armor. The recruiter might not even mention this MOS — it's overshadowed by the 0311 pipeline. The reality: you get more technical training, a reconnaissance mission, and vehicle-based firepower that standard infantry doesn't have. The downsides are real: the LAV-25 fleet is aging, maintenance is constant, and 29 Palms — where many LAR units are based — is one of the most isolated bases in the military. Promotion is slow because the community is small. The camaraderie is tight, the mission is interesting, and the skills (vehicle operations, gunnery, reconnaissance) translate to security contracting and defense industry roles.
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