Can you be in the Army Reserve and be a Ranger at the same time?

If you earned your Ranger tab on active duty prior to joining the Army Reserve, you will still continue to be Ranger qualified. If you are simply serving in the US Army Reserve and intent to be sent to Ranger school from your Reserve unit, your chances are slim to none, and you would be better off to join the National Guard and try to get into a Special Forces unit of the National Guard. If you are looking to serve in a Ranger unit of the US Army Reserve, then this will be impossible, as there are no such units in the Army Reserve. The US Army Reserve is composed of training and support units, with all combat arms relegated to the Regular Army and Army National Guard. The one exception to this is the 100th Battalion, 442nd Infantry Regiment, which is an infantry battalion of the US Army Reserve, which is composed of reservists from Hawaii, American Samoa, Saipan, and Guam.