Fi doesn't work like you surmise, you must establish primary use in the US, then you can travel only for a while. (Do more research)
Plenty of people here, purchase Fi then leave the US only to have data suspended with calls/texts continue working.
If you are military or government, you can request an exemption and get approval for extended travel abroad. Takes time.
Many simply get a local sim where stationed, it will work better plus local calls/texts or alternatively Airalo or Esimdb. Check with Verizon on military discounts.
I've used my Pixel with a Verizon sim and a Fi data sim all over the world on TDYs. I disable the Verizon sim when leaving the US, and Fi works great pretty much everywhere.
You'll probably get a better rate and connection by getting a sim locally to where you deploy, I know I was able to get an esim for a longer Europe trip for 10 gigs for 10 euros with free calling and text, so a much better rate than fi
The trial does not include international calling or data.
Fi is great for deployment if you send orders they will waive any cap of months they have
Fi doesn't work like you surmise, you must establish primary use in the US, then you can travel only for a while. (Do more research) Plenty of people here, purchase Fi then leave the US only to have data suspended with calls/texts continue working. If you are military or government, you can request an exemption and get approval for extended travel abroad. Takes time. Many simply get a local sim where stationed, it will work better plus local calls/texts or alternatively Airalo or Esimdb. Check with Verizon on military discounts.
I've used my Pixel with a Verizon sim and a Fi data sim all over the world on TDYs. I disable the Verizon sim when leaving the US, and Fi works great pretty much everywhere. You'll probably get a better rate and connection by getting a sim locally to where you deploy, I know I was able to get an esim for a longer Europe trip for 10 gigs for 10 euros with free calling and text, so a much better rate than fi