The Irish for Battle-Cry, Slúagh-ghairm, is pronounced [sloo-ah-hahrm]. The most common word used in Irish battle-cries was abú [ah-boo] meaning Hooray! or Forever! It comes from the words, buaigh/buaidh [boo-ee] and bua [boo-ah], meaning to win, victory or triumph.
Interesting that modern military cries of “Booyah! Oorah! Hooah! & Hooyah!” all sound like the Irish word for victory, “bua,” and sounds like the Irish word for army, troops,
or assembly, “slúagh.”
Also interesting is the Hebrew word for shout or trumpet blast, teruah [too-ah], also sounds like bua and slúagh.