Pentagon Federal Credit Union is offering a Visa card with 2% cash-back rewards with no tiers and unlimited earnings.
The base cash back rate is 1.5%. To be eligible for the additional 0.5% cash back you must either open/maintain an America Access checking account (no fees with minimum $500 balance, $10/month fee otherwise), or you must have current or prior military service. The online application process is quick - it uses your existing PenFed account information and only asks a few questions including annual income. You'll get the result of your application within just a few seconds of submitting.
No annual fee and no foreign transaction fees.
There's also a $100 statement credit promotion if you spend $1,500 in the first 90 days.