Wiktionary
incursionary
a. Of or relating to incursion.
Usage examples of "incursionary".
It is not impossible that a foreign state, desperate for resources, would, upon learning of such a discovery, send an incursionary force to appropriate that discovery before the rest of the world even knew it existed.
His strategic ability with regard to small incursionary forces was extraordinary.
Barnaby would give a two-day seminar on covert incursionary warfare to the most promising American officers.
Dozens of those heretofore un-fucking-heard-of super-Dreadnought ships had turned up when the incursionary force had been expecting no more than a handful - at most - of the standard ones, the models without the reactive mirror armour, the plasma engines and the wideband lasers.