Yes, the short answer is a yes. Some agencies may have special physical requirements for some positions (FBI, Secret Service, ect,) yet most are office jobs. There are many advantages to civil service after military. One benefit is if you have a 30% VA rating or more, then you are in the top tier even if you are minimally qualified. this means you are only competing with other vets and the agencies cannot (very hard for them) to Passover a veteran preference individual for a non veteran. Most federal agencies have a Hire a Hero coordinator and you can get on the list for 6 months and possibly get a direst hire position up to and including GS-11. VEOA and VRA are also special hiring authority for most federal agencies. Once military retired you cannot start a federal job for 180 days, yet this does not limit you from applying and being selected. Once an agency makes an offer and you accept, then the agency has to hold the position for you until the remainder of the 180 days expire, then you are appointed and start the job. Your military service may get you more hours of leave than just a non service member. Yet, as a general rule you can not use the same service period for two separate retirements, so you may start at zero. No worries though because there are many data points for retirement in Federal Employees Retirement System (FERS). Most voluntary retirement is minimum retire age (MRA) which is 57 for most people and 30 years of FERS service; or 60 years of age and 20 years of FERS service; or 62 years of age and 5 years of FERS service. Once hired there is no maximum age so you can work as long as you like, if that is your desire. Best of luck and get a profile in
www.usajobs.gov soonest.