Iowa Code § 804.2
The warrant must be directed to any peace officer in the state; give the name of the defendant, if known to the magistrate; if unknown, may designate “name unknown”; and must state by name or general description an offense which authorizes a warrant to issue, the date of issuing it, the county or city where issued, and be signed by the magistrate with the magistrate’s name of office.
Arrest warrant forms, see R.Cr.P. 2.36 – Forms 5, 6, 7
[C51, §2828, 2829; R60, §4535, 4536; C73, §4187, 4188; C97, §5184; C24, 27, 31, 35, 39, §13462; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, §754.5; C79, 81, §804.2]