Depending on your Shipmate's history with World of Warships, they'll have a different Milestone to accomplish in order for you to get rewarded:
Good News! If you've already been sharing your link beforehand, after June 4, then Shipmates recruited will retroactively qualify!
*Each Shipmate you recruit only has one Milestone.
Example: Smith and McGraw both recruit through the Recruiting Station during the Recruitment Rumble. 9 of Smith's Shipmates reach their Milestones, while 17 of McGraw's Shipmates reach theirs. At the end of the event, Smith scores $90 (9 x $10) in Amazon Credits while McGraw gets $255 (17 x $15)
After the Recruitment Rumble ends, prize links will be sent to you via email. You'll also get an in-game notification reminding you to check your email.
Follow those links in the email and login with your Amazon account to redeem your rewards!
USDCADMXNBRLUnit Rate per $1 USD11.3183.8