An explosive military science fiction thrill ride from #1 Amazon Bestselling author John Spearman.

A New Technology. A Looming War. A Captain Forged in Battle.

Commander Perseverance Andrews of the Royal Navy is unexpectedly offered command of one of the first five ships in the fleet equipped with revolutionary new technology: impenetrable paraboloid plasma shielding and devastating photon cannons.

This promotion catapults her and a handful of other junior commanders to the forefront of an impending interstellar conflict with the Rodinan Federation and Chinese Republic. Intelligence reports that they’re developing the same shielding technology and could strike at any moment.

Andrews and her hand-picked crew must master these advanced systems quickly when the first test comes sooner than anyone expected.

A surprise attack by their enemies throws Andrews into the first battle of this new era. The untested Commonwealth fleet must rely on officer’s like Andrews to meet the enemy head on and claim victory.

The Defense of the Commonwealth is a gripping military sci-fi adventure that showcases tactical ingenuity and the unyielding spirit of those who stand on the front lines. Fans of starship combat, strategic warfare, and compelling leadership will be captivated by this thrilling tale.