'Jack' was in general usage as slang for 'a policeman', but in World War I was adapted to 'a military policeman'. The 'military police' sense is attested in B&P, Digger Dialects, and F&G.
Workshy or selfish person. For example 'He's Jack as f***.
“Jack” This term has several different meanings including selfish, lazy, and workshy (unwilling to work). Jack is the guy no one wants in their unit.
“Jacks” comes from Cockney rhyming slang. Old Bill = Jack 'n' Jill. The name Jack for police started in the gold fields when miners who didn't have miners licenses would call out Jack when they saw the police coming to warn others to hide so that the police wouldn't catch them without a license.
The Royal Australian Infantry Corps motto is 'Duty and Honour', while the motto of the infantry units varies individually.
Digger became the general mode of address for Australian and New Zealand soldiers although its usage disappeared for the latter troops, who became known simply as Kiwi's. Australian soldiers in World War One soon adopted the term with great pride and continue to do so.
“Brave men rejoice in adversity, just as brave soldiers triumph in war.” “America without her soldiers would be like God without His angels.” “No man is a man until he has been a soldier.” “Freedom is never free.”
1. often Jack Informal A man; a fellow. 2. a. One who does odd or heavy jobs; a laborer.
In Australia jack is a standard term in VIC, quite common in NSW and hardly ever heard in WA, to the point it would cause confusion. It's mildly disrespectful everywhere but only insofar as other equivalent informal terms for police such as copper, peeler, old bill, bobby, D, demon, monarch, not offensive at all…
traps, trappers or jacks – police. These Australianisms have been largely replaced by the international cops, coppers, pigs or bacon. However the older, more affectionate wallopers is also still used.
A naval jack is usually flown when the ship is not under way, but is moored or at anchor, or when it is dressed overall on special occasions.
The noun Jack has been used to refer generally to a man, and especially an ill-mannered or obnoxious fellow, since at least the 1600s.
Round about the year 1700, landlubbers began calling sailors 'Jack tars': 'Jack' because Jack was already a popular name for a sailor; 'tars' because long-haired sailors were dipping their locks in tar to make a pigtail.
Reginald Joseph Ossé (July 8, 1969 – December 20, 2017), known professionally as Combat Jack, was a Haitian-American hip hop music attorney, executive, journalist, editor and podcaster. He was the former managing editor of The Source.
Military and law enforcement
Blackjack (weapon), a type of baton for law enforcement.
Three such words are “gyrenes,” “jarheads,” and “grunts.” Their times of origin and usage differ somewhat, but each has the same role in the Marine Corps culture. They have become a source of pride for all Marines. ties to the U.S. Navy, Marines interacted with sailors more and more.
Jack. The most obvious lesbian-related word in Gentleman Jack is the “jack” of the title. This was a 19th-century slang term for lesbian. But Lister herself used the word in the slightly more specific sense of masculine-presenting lesbians, which is reflected in the second series of the show.
Noun. jacks. (slang, now chiefly Ireland) Alternative form of jakes: an outhouse or lavatory.
slang Primarily heard in US. 1. To become extremely muscular and strong, as through weightlifting. Tom used to be a skinny little dude, but he spent the summer getting jacked. With my simple workout routine, you can get jacked up without any expensive supplements or endless hours at the gym.
Hooah /ˈhuːɑː/ is a battle cry used by members of the United States Army, U.S. Air Force, and U.S. Space Force.
Oorah is a battle cry common in the United States Marine Corps since the mid-20th century. It is comparable to hooah in the US Army and hooyah in the US Navy and US Coast Guard. It is most commonly used to respond to a verbal greeting or as an expression of enthusiasm.
"Army of One" was a relatively short-lived recruiting slogan. It replaced the popular "Be All You Can Be" and was replaced in 2006 by the new slogan "Army Strong". The reason for the replacement, states Frank Luntz, is that the slogan "Army of One" is contrary to the idea of teamwork.
Many Australian and New Zealand soldiers in the Second Boer War, 1899–1902, were former miners, and at the Battle of Elands River (1900), the Australian defenders earned a reputation as diggers, who hastily constructed dugout defences in the hard ground.
'Digger' was a colloquial name applied to Australia and New Zealand Army Corps (ANZAC) personnel that developed during the war (although the term was already applied to miners back in Australia and New Zealand).
Instead of calling them "boots" or something, Aussie's call them "RMs," "Blundstones," or "Rossis." They are truly ubiquitous.