Another day, another Battlefield 4 DLC freebie. Today it's Naval Strike, a collection of four aquatic-themed maps set in the South China Sea: Lost Islands, Nansha Strike, Wave Breaker, and Operation Mortar. The DLC also adds five new weapons to the game, new attachments, and the Carrier Assault Mode, “a re-imagining of the classic Battlefield 2142 Titan Mode.”

The freebie is part of EA's effort to stoke interest in Battlefield 1 by giving away DLC from previous Battlefield games in the months leading up to its launch. It began in May with Battlefield 4: Dragon's Teeth, and then continued last month with Second Assault. There is one catch, though: The DLC is only free until July 26, although you'll keep it forever as long as you snag it before then.