It is unknown when gunfire was concocted, but it is known that it was mixed by British Army soldiers during the 1890s. Gunfire is served by officers and non-commissioned officers to lower ranks before a morning attack (as a form of Dutch courage) and as a celebration before a Passing out parade. It is also traditionally served to soldiers in their beds by their officers on Christmas Day at reveille if they are deployed over Christmas. Individual regiments may carry out the ritual on other days: for example, in the Royal Tank Regiment gunfire is served on Cambrai Day; in the Queen's Royal Hussars on Balaclava Day and Saint Patrick's Day; and in the Royal Dragoon Guards gunfire made with whiskey on St Patrick's Day.
The Harvey Wallbanger was created in 1969 as a marketing campaign by McKesson Imports Company, importer of Galliano, as a means of driving sales of Galliano. The campaign was headed by George Bednar, marketing director of McKesson, and a cartoon character was commissioned from graphic artist William J. "Bill" Young in Lima, New York, with the tagline that Bednar claimed to have penned: "Harvey Wallbanger is the name. And I can be made!". The Harvey Wallbanger character was a surfer, appearing in various ads during the campaign, and was mentioned in print as early as 1969, continuing into the 1970s.
The cocktail itself is credited to three-time world champion mixologist Donato "Duke" Antone, of Hartford, Connecticut, where he ran a bartending school, Bartending School of Mixology (established 1949) and worked as a cocktail consultant. It is unclear if Antone designed the drink for Galliano (to advertise the ingredient), or renamed an existing drink, as suggested by his grandson, who claimed the earlier version was called "Duke's Screwdriver". An implausible story of the origin is that it was invented in 1952 by Antone, and named after a surfer frequenting Antone's Blackwatch Bar on Sunset Strip in Los Angeles. This is implausible because at the time, Antone was running a bartending school in Hartford, and there is no evidence of any "Blackwatch Bar" in Los Angeles at the time, so it is presumably a fabrication; spirits writer Robert Simonson goes so far as to say that "no sane person ever believed that story."
Cocktail historian David Wondrich considers the Harvey Wallbanger the first successful consultant-created cocktail saying,
With Young’s Harvey to blaze the way, Antone’s simple—even dopey—drink would go on to be the first drink created by a consultant to actually take the nation by storm.
Antone is also credited with the Freddy Fudpucker, which swaps vodka for tequila, but this was not nearly as popular.