How many times can you use an FHA/VA loan

[Immanuel Pierre]

How many times are you able to access a VA Loan/FHA loan without refinancing previous loans? For context, I have used my VA loan twice, both as primary residents. I bought one at my second duty station then my second home when I got to my third duty station and about 18 months after the purchase of the first. I am still at my third duty station, but I want to continue to grow my portfolio and looking to buy another home in the same 18 month time frame. The first two homes were house hacks and the third will be as well. I also save enough to where I can save for a 20% down payment, I have also thought about HELOCs or refi's. But, if a FHA loan was a possibility that makes the most sense for me because I can save for 3.5% down payment and closing cost extremely and I can keep the refi/HELOCs in my pocket as options for acquisitions in the future. Apologies for the long post but all feedback is welcomed !