[PC] FREE-Battlefield 1: Turning Tides DLC/Battlefield 4: Second Assault DLC (Both Normally $24.99US) - Origin

Those two Battlefield DLCs are currently free. Not sure how long they will be free.
As it is a DLC you obviously need to have Battlefield 1/Battlefield 4 in order to use it.
However, if previous DLC freebies are to go by, it might be possible to add the DLC to your Origin account even if you do not have the base game, just in case you buy it later (and then you can use it).

Battlefield 4: Second Assault DLC: https://www.origin.com/aus/en-us/store/battlefield/battlefie…

About the DLC: Battlefield 1:

Storm the beaches of Gallipoli with the Allied forces or defend the Ottoman Empire’s fortifications at Cape Helles. Continue the battle at the Achi Baba hilltop in an intense infantry-focused push. Engage in epic naval clashes between the British Empire Royal Marines and German Navy in Heligoland Bight. Take part in the daring British raid at Zeebrugge with rough waves and a vast German mole.

Battlefield 1 Turning Tides extends your arsenal by introducing the new L-Class Destroyer (ready to rule the waves in naval combat) and the new C-Class Airship (to deliver death from above).

Key Features:

Four new multiplayer maps. Get ready for beach landings, raids, and naval combat in:

• Cape Helles (Gallipoli)
• Achi Baba (Gallipoli)
• Zeebrugge (North Sea)
• Heligoland Bight (North Sea)

The British Empire Royal Marines. Don the characteristic blue uniform of the British Empire’s elite naval troops and charge into battle with the new Royal Marines.

An epic new Operation. Take part in the British amphibious assault on the Gallipoli peninsula in 1915. Defend or attack sectors on the Cape Helles and Achi Baba maps.

New Conquest Assault game mode. Hold your ground or relentlessly press the offensive. Attackers and defenders fight over key areas, exclusively controlled by the defending team as the match starts.

Six new unlockable weapons. Find your new favorite weapon among the M1917 Trench Carbine, Maschinenpistole M1912/P.16, Farquhar-Hill, M1917 MG, Carcano M91 Carbine, and Type 38 Arisaka. When the fight gets close and personal, unleash your fury with two new melee weapons: Naval Cutlass and Grappling Hook.

A new destroyer and airship. Rule the waves with the all-new L-Class Destroyer. Jump into one of four seats and deliver mayhem to sea, air and ground units using cannons, torpedoes, AA guns and mines. To dominate the air, spawn in the new, nimble C-Class Airship and deliver death from above.

The new Infiltrator Elite Class. Hide in plain sight and move faster across the battlefield. Take advantage of a permanent sprint boost while calling in artillery strikes and deploying a mobile spawn for friendly troops.

Continue your Battlefield 1 career. Unlock new Dog Tags, Service Stars, Codex Entries and more.

About the DLC: Battlefield 4:

Second Assault brings back four fan-favorites that are more challenging than ever before. What’s better than playing on classic Battlefield 3 maps? Playing those maps updated with the power of the Frostbite 3 engine!

• Operation Metro 2014: Fight both enemy opponents and claustrophobia in subterranean Paris. Bring the sky down on your opponents with destructible ceilings, and trap them in the flooded subway tunnels.

• Caspian Border 2014: The central communications tower is now a hammer, ready to fall on your enemies. Take advantage of the confusion by fortifying your teammates in the new vantage points along the walls.

• Gulf of Oman 2014: Everything feels normal on this map until the sandstorm whips through, destroying visibility and reducing the efficacy of your combat vehicles.

• Operation Firestorm 2014: Create Hell on Earth as you breach the refinery pipelines and send gouts of flame to roast your opponents.

Deploy five new weapons and execute on 10 new assignments, each with their own unlocks. Play Capture the Flag made even more fun with the returning Dune Buggy. The classics are new again in Second Assault!

Enjoy.