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ADJECTIVE LAW. The aggregate of rules of procedure or practice. As opposed to that body of law which the courts are established to administer, (called “substantive law,”) it means the rules according to which the substantive law is administered. That part of the law which provides a method for enforcing or maintaining rights, or obtaining redress for their invasion. (Black's Law Dictionary)

The last of the Aztec empire was destroyed at Tenochtitlan in 1521, by armed invasion after a smallpox epidemic brought by Europeans. (Wikipedia)

The court ruled that Luzgin posted an article with knowingly false information about a joint invasion of Poland by German and Soviet forces on 1 September 1939. (BBC News)

Criminal responsibility is "not a standalone crime," according to Terry Maroney, law professor at Vanderbilt University and co-director of the George Barrett Social Justice Program. It many cases it is used, instead, as an explanation for an arrest of a person who may be an accomplice in a crime — for example, the person who drives the getaway car during a home invasion. The driver didn't commit the actual crime, but he facilitated it. (Tennessean)