Article Title: Where ‘hooah,’ ‘oorah,’ and ‘hooyah’ came from and why they still echo
Article Excerpt: "...You’ve heard them during morning formations, over the roar of C‑17 engines, and in muddy chow halls at 0400. The battle cries “Hooah,” “Oorah,” and “Hooyah” aren’t just calls; they’re part of service life. Each is a signature of branch pride, and each carries a history steeped in grit, camaraderie and tradition. ... Hooah: the Army’s... Oorah: a Marine Corps call born...“Hooyah” belongs primarily to sailors ... "
Reference Source: www.navytimes.com
