Okay, here's a blurb for "The 'Tin Can' Brigade: Rust and Resolve" by K.R. Calder, designed to evoke that classic space opera feel and entice readers:

In a galaxy bleeding under the relentless advance of the crystalline Adamant Hegemony, humanity stands on the precipice of annihilation. Star systems fall like dominoes before a technologically superior foe, and the once-proud Terran Fleet is a shadow of its former glory. Echoing the grand tradition of classic space opera, K.R. Calder plunges you into a desperate war where survival itself seems an impossible dream.

When all seems lost, Fleet Command dusts off its forgotten relics – a ragtag collection of outdated freighters, mothballed cruisers, and patched-up mining ships. Dubbed the "Tin Can Brigade," this expendable fleet, crewed by the overlooked, the disgraced, and the desperate, is given a suicide mission: Operation Lodestone. Leading them is Comandante Isabella Montoya, a brilliant officer haunted by a controversial past, now handed a command most believe is a death sentence. With her are souls like the young, untested analyst Alférez Mateo Russo, whose theories are as unconventional as their fleet, and the grizzled Ingegnere Capo Giorgio Esposito, who can coax miracles from dying machines but has little faith left in grand plans.

Sent deep into hostile territory as a mere diversion, the Tin Can Brigade stumbles upon an electrifying secret: a critical vulnerability at the very heart of the Adamant Hegemony’s seemingly invincible war machine. Montoya and her unlikely heroes face an agonizing choice – follow their suicidal orders to the letter, or defy an entire star fleet’s command structure and gamble everything on one audacious, unauthorized strike against an impossible target.

Return to an era of epic space battles, rugged heroism, and star-spanning adventure. "The 'Tin Can' Brigade: Rust and Resolve" is a thrilling saga where courage is forged in the crucible of desperation, where ingenuity outmaneuvers brute force, and where the crews of forgotten ships might just be humanity’s last, unlikeliest hope. Pick up your copy and enlist for a classic space opera journey that will leave you breathless.