Military - As enacted, recognizes the United States space force as a distinct branch of the United States armed forces by adding the space force to definitions and provisions related to the military. - Amends TCA Title 2; Title 6; Title 8; Title 36; Title 39; Title 40; Title 49; Title 55; Title 58; Title 62; Title 63 and Title 66.

SB 1670 updates Tennessee state law to recognize the U.S. Space Force as a distinct military branch by adding it to existing definitions across multiple statutes. The bill amends 15 sections of the Tennessee Code - including provisions related to military personnel, veterans' benefits, and uniformed service - to explicitly include "space force" alongside other branches like the Army, Navy, and Air Force. This change ensures state agencies and programs (such as those handling military leave, vehicle registration for service members, and benefits eligibility) now formally encompass Space Force personnel. The bill does not alter rights or create new programs but aligns Tennessee's legal references with the federal establishment of the Space Force as a separate military branch.