12 Years Total. 3 Army. 2 Nat. Guard. and 7 Years Navy.
Racing: Get ready to get fucked over by your command. Races fill up fast, and often leave will not be approved till very close to race day, so you either drop the cash 10 months in advance of the race and hope they will approve your leave, or you wait until the last minute, hoping it doesn't fill up, and then pay out the ass for the last tier registration fee and travel and hotels (if you can even find any). Sometimes, I just sleep in the back of the SUV after dropping off the bike, because the nearest hotel is an hour drive away. Be prepared to eat entry fees and never race. Always book hotels than you can cancel for free.
Training: If you can successfully be good at your job AND train for triathlon, you command will notice and you will be a shining example to your peers. If you train hard, let everyone know you are an endurance athlete, then suck ass at your job, you will ruin it for the rest of us and your command will forever hate athletes. Putting "Ironman" on a job application is a good way for HR to realize you aren't gonna give the company your best.
Balance: There is none. Your life is wake, train, eat, work, eat, train, eat, sleep. It's doable, but no more hanging out drinking all night. Night is for sleeping/recovery. Prepare to become very lame compared to the good ol' days. But on the bright side, you'll be fitter, look better in uniform, inspire others around you, priorities change, life improves. Just gotta listen to your body, because it's easy to over do it and find you've been walking around like a zombie, overtrained, addicted to stimulants, your inflammation/cortisol levels are through the roof, your body is breaking down, your stress levels are insane, and you hate yourself for skipping workouts.
Take a deep breath. Focus on the whole person, mental, physical, emotional, and spiritual.
For the best of the best (think officers who graduated from Yale with a running/swimming scholarship) they have a secret team of triathletes representing their branch who compete against each other, then go to France to compete against other countries military athletes. You better be a world class athlete with some wins though.
https://www.navyfitness.org/...navy-teams/triathlon