In the process of buying my first 4 unit!  

And yes, you CAN buy a property while stationed overseas. 

If you're trying to buy a primary, househacking with a multifamily purchase MAY help with the DTI situation - it will just depend on the income from the non-primary unit(s). 

Time sink: takes so much effort and time while working full time.Option 2: Buying Rental Property in a Cheaper MarketPros:Time to cash is immediate is about 40 days from closing time.Landlord friendly: which means eviction and rent control in LandlordDiversification: Investing in a different location spreads the risk.Property Appreciation: Some emerging markets might offer significant appreciation over time.Established Rental Market: Easier to find tenants in established rental markets with a high demand.Potential to build an ADU: i can build on the property land.

Unfortunately, you can not buy now and move in next year using a VA loan. 

VA loans are intended purchasing a primary residence, you can’t buy a property for the express purpose to be a rental.

Replace it when you buy, and it's free. 

We have been researching our market and are very ready to buy an investment property.

I'm looking to buy a 2-4 unit this summer (most likely a duplex based on my area). 

You could buy a current STR and you might get all that included, but it also sounds like you have equity you can afford it.