The hiring process has changed since I was hired in 1997. When I applied, all I had to provide at first was my name, address, and social security number. USPS contacted me to take a test with a sample test enclosed. After taking the test, I was contacted to complete my application, which was very detailed. I had to take a drug test and they did a background check. There was only one interview and it didn't seem like an interview. I was basically briefed on what it would be like to work at the post office. If you've worked for the military, you'll probably adjust easily. Most supervisors are military.