The report calls for the creation of a new major unified Combatant Command called US Space Command, which would be akin to the operational commands that oversee US troops in the Middle East and the Indo-Pacific.
The Space Force aims to organise, train, and quip people in the interest of space-related national security.
"A sixth branch of the United States military to support America's objectives in orbit".
One of the arguments in favor of devoting more resources to a Space Force or Space Command is that American rivals like Russian Federation and China appear increasingly ready to strike US space-based capabilities in the event of a conflict.
The Pentagon proposal delivered to Congress Thursday lays out plans to consolidate the Pentagon's war-fighting space forces and make organizational changes to boost the acquisition and development of leading edge technologies.
For months, US President Donald Trump has been calling a Space Force, a new, free-standing military department, with its own chain of command and uniforms.
Mr Trump's plans for a Space Force require approval by Congress, with a budget for the scheme to be outlined next year.
"Russia has been designing an airborne laser to disrupt our space based system and it claims to be developing missiles that can be launched from an aircraft mid flight to destroy American satellites". The Air Force now oversees some of the most critical space-based capabilities.
The report says the new command will "improve and evolve space warfighting", focusing on doctrine, tactics, techniques and procedures.
"This is a critical step toward's establishing the Space Force as the sixth branch of our armed forces".
A new assistant secretary of defense for space: A position that will help transition eventually to a "fully independent Secretary of the Space Force in the years ahead" who will report to Secretary of Defense Mattis.
The U.S. already has a space-based military footprint. Space is vital to the way the United States wages war; The Pentagon's satellites are used for missile-defence warnings, guiding precision munitions, and providing communications and reconnaissance. The U.S. will meet the emerging threats on this new battlefield, he said, and carry on the cause of liberty and peace into the next great frontier. "But history proves that peace only comes through strength", he added. We are going to have the Air Force and we are going to have the Space Force - separate but equal.