What does the brass mean, exactly, in military context

In books by many different authors I encountered phrases like this: He curses the brass for not caring whether he lives or dies. From context, it seemed to me that it meant high-rank officers

What is meant by 'military brass' in a military context? - Quora

Caisson Platoon: Solemn duty of honor and respect, Article

The Ultimate Guide to U.S. Military Pins and Ribbons and What They Mea

WWII Slang From the Front

The Salvation Army - Wikipedia

What is meant by 'military brass' in a military context? - Quora

Regiments of the Civil War American Battlefield Trust

Artifacts

History of US Marine Corps Uniforms

Sending in the Troops: The Kerner Report, Civil Unrest, and the US Military - Modern War Institute

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