'Chariots and Horsemen' in the Bible

Then Adonijah the son of [David’s wife] Haggith exalted himself, saying, “I [the eldest living son] will be king.” So [following Absalom’s example] he prepared for himself chariots and horsemen, and fifty men to run before him.

Now Solomon collected chariots and horsemen; he had 1,400 chariots and 12,000 horsemen, which he stationed in the chariot cities and with the king in Jerusalem.