. . . "Ypiranga incident" . . . . . "1914-04-21" . . "German ship captured then released" . . . . "intercepted ''Ypiranga''" . . . "a naval brigade of marines and sailors occupied Veracruz" . . "Ypiranga incident" . . . . . . . . . "detained" . "''Ypiranga'' incident" . "nine American sailors were arrested by the Mexican government in Veracuz" . .