Yep - an old Marine Corps buddy retired at or before age 55 from the CHP; he and his wife spend much of the year traveling the world.
I don’t have a problem with our military getting good retirement. Unless he was a high ranking officer, or he was in 30+ years, their monthly retirement isn’t all that high. It’s also possible they have been very frugal throughout the years. They can also hop military flights, at least you use to be able to do that. And traveling into some area’s of the world you can live pretty cheaply.