You can buy/sell houses all day long without a license, I've done it many times and it is not that hard.But as @Carlos Marin said, if you are just an investor, getting a really good Realtor on your team will make your life easier and save you money.

Someone who is constantly bringing winners to the table won't stay unfunded forever. 

This lets you grow your portfolio without abandoning a proven winner or immediately incurring capital gains.It's a tough call because avoiding capital gains is tempting, but the quality of the asset you currently have is hard to beat.

I'm a Marine Corps veteran that got out in 2017.

My husband is a Marine Corps veteran as well :-) It’s inspiring to hear your resilience and how you’re turning a major life pivot into an opportunity to build long-term wealth through real estate.

I am near Camp LeJeune & we have many Marine/Navy owners of LTR & many tenants.

Baselane is definitely the winner.

Home to The Ohio State University with nearly 60,000 students, 5 fortune 500 companies, over +25% population change since 2000, 2016 smart city challenge award winner gaining 50 million dollars in funding from the government ( https://www.columbus.gov/smartcity/), Intel is spending 20 Billion dollars to build two semiconductor plants, and many many more great things presently and coming in the future.

(The only winners in most lawsuits are the attorneys.)

Answer:  patience and timing.Without being patient, staying consistently on the hunt for a good opportunity, you might be able to stumble onto a winner--but that won't keep you in the game long term.Always be looking, and when you do find the deal, pounce.