The Battle of Grand Gulf was fought on April 29, 1863, during th: Possession can be expressed either by the possessive enclitic -s (also traditionally called a genitive suffix), or by the preposition of. Historically the -s possessive has been used for animate nouns, whereas the of possessive has been reserved for inanimate nouns. Today this distinction is less clear, and many speakers use -s also with inanimates. Orthographically the possessive -s is separated from a singular noun with an apostrophe. If the noun is plural formed with -s the apostrophe follows the -s.[175]